Home / 287,966.97-431,948.64-98,335.85

Finding the Fourth Proportional to 287,966.97, 431,948.64 and 98,335.85

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Solution

The fourth proportional to 287,966.97, 431,948.64 and 98,335.85 is: 147,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,966.97 : 431,948.64 = 98,335.85 : x
  2. Step 2: Convert to fraction form
    287,966.97/431,948.64 = 98,335.85/x
  3. Step 3: Cross multiply
    287,966.97x = 431,948.64 × 98,335.85
  4. Step 4: Simplify right side
    287,966.97x = 42,476,035,762.05
  5. Step 5: Solve for x
    x = 42,476,035,762.05/287,966.97
  6. Step 6: Final answer
    x = 147,503.15

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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.