Home / 258,721.29-387,950.45-118,359.63

Finding the Fourth Proportional to 258,721.29, 387,950.45 and 118,359.63

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Solution

The fourth proportional to 258,721.29, 387,950.45 and 118,359.63 is: 177,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,721.29 : 387,950.45 = 118,359.63 : x
  2. Step 2: Convert to fraction form
    258,721.29/387,950.45 = 118,359.63/x
  3. Step 3: Cross multiply
    258,721.29x = 387,950.45 × 118,359.63
  4. Step 4: Simplify right side
    258,721.29x = 45,917,671,128.54
  5. Step 5: Solve for x
    x = 45,917,671,128.54/258,721.29
  6. Step 6: Final answer
    x = 177,479.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.