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Finding the Fourth Proportional to 487,113.30, 730,785.15 and 154,689.30

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Solution

The fourth proportional to 487,113.30, 730,785.15 and 154,689.30 is: 232,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,113.30 : 730,785.15 = 154,689.30 : x
  2. Step 2: Convert to fraction form
    487,113.30/730,785.15 = 154,689.30/x
  3. Step 3: Cross multiply
    487,113.30x = 730,785.15 × 154,689.30
  4. Step 4: Simplify right side
    487,113.30x = 113,044,643,303.90
  5. Step 5: Solve for x
    x = 113,044,643,303.90/487,113.30
  6. Step 6: Final answer
    x = 232,070.53

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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.