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Finding the Fourth Proportional to 385,013.43, 577,516.47 and 104,530.68

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Solution

The fourth proportional to 385,013.43, 577,516.47 and 104,530.68 is: 156,795.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,013.43 : 577,516.47 = 104,530.68 : x
  2. Step 2: Convert to fraction form
    385,013.43/577,516.47 = 104,530.68/x
  3. Step 3: Cross multiply
    385,013.43x = 577,516.47 × 104,530.68
  4. Step 4: Simplify right side
    385,013.43x = 60,368,189,320.30
  5. Step 5: Solve for x
    x = 60,368,189,320.30/385,013.43
  6. Step 6: Final answer
    x = 156,795.02

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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.