Home / 287,545.35-431,398.02-125,453.58

Finding the Fourth Proportional to 287,545.35, 431,398.02 and 125,453.58

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Solution

The fourth proportional to 287,545.35, 431,398.02 and 125,453.58 is: 188,215.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,545.35 : 431,398.02 = 125,453.58 : x
  2. Step 2: Convert to fraction form
    287,545.35/431,398.02 = 125,453.58/x
  3. Step 3: Cross multiply
    287,545.35x = 431,398.02 × 125,453.58
  4. Step 4: Simplify right side
    287,545.35x = 54,120,426,013.91
  5. Step 5: Solve for x
    x = 54,120,426,013.91/287,545.35
  6. Step 6: Final answer
    x = 188,215.27

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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.