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Finding the Fourth Proportional to 387,343.79, 581,049.16 and 106,861.04

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Solution

The fourth proportional to 387,343.79, 581,049.16 and 106,861.04 is: 160,300.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,343.79 : 581,049.16 = 106,861.04 : x
  2. Step 2: Convert to fraction form
    387,343.79/581,049.16 = 106,861.04/x
  3. Step 3: Cross multiply
    387,343.79x = 581,049.16 × 106,861.04
  4. Step 4: Simplify right side
    387,343.79x = 62,091,514,089.18
  5. Step 5: Solve for x
    x = 62,091,514,089.18/387,343.79
  6. Step 6: Final answer
    x = 160,300.79

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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.