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Finding the Fourth Proportional to 309,254.31, 426,763.71 and 181,938.09

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Solution

The fourth proportional to 309,254.31, 426,763.71 and 181,938.09 is: 251,070.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,254.31 : 426,763.71 = 181,938.09 : x
  2. Step 2: Convert to fraction form
    309,254.31/426,763.71 = 181,938.09/x
  3. Step 3: Cross multiply
    309,254.31x = 426,763.71 × 181,938.09
  4. Step 4: Simplify right side
    309,254.31x = 77,644,574,278.71
  5. Step 5: Solve for x
    x = 77,644,574,278.71/309,254.31
  6. Step 6: Final answer
    x = 251,070.31

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1.5x scale

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.