Home / 309,382,444,482.78-426,947,793,917.29-172,202,326,761.30

Finding the Fourth Proportional to 309,382,444,482.78, 426,947,793,917.29 and 172,202,326,761.30

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Solution

The fourth proportional to 309,382,444,482.78, 426,947,793,917.29 and 172,202,326,761.30 is: 237,639,222,358.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,382,444,482.78 : 426,947,793,917.29 = 172,202,326,761.30 : x
  2. Step 2: Convert to fraction form
    309,382,444,482.78/426,947,793,917.29 = 172,202,326,761.30/x
  3. Step 3: Cross multiply
    309,382,444,482.78x = 426,947,793,917.29 × 172,202,326,761.30
  4. Step 4: Simplify right side
    309,382,444,482.78x = 73,521,403,518,161,336,139,776
  5. Step 5: Solve for x
    x = 73,521,403,518,161,336,139,776/309,382,444,482.78
  6. Step 6: Final answer
    x = 237,639,222,358.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.