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Finding the Fourth Proportional to 390,737.04, 585,710.28 and 154,246.20

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Solution

The fourth proportional to 390,737.04, 585,710.28 and 154,246.20 is: 231,213.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,737.04 : 585,710.28 = 154,246.20 : x
  2. Step 2: Convert to fraction form
    390,737.04/585,710.28 = 154,246.20/x
  3. Step 3: Cross multiply
    390,737.04x = 585,710.28 × 154,246.20
  4. Step 4: Simplify right side
    390,737.04x = 90,343,584,990.94
  5. Step 5: Solve for x
    x = 90,343,584,990.94/390,737.04
  6. Step 6: Final answer
    x = 231,213.26

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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.