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Finding the Fourth Proportional to 390,593.60, 585,890.40 and 95,105.60

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Solution

The fourth proportional to 390,593.60, 585,890.40 and 95,105.60 is: 142,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,593.60 : 585,890.40 = 95,105.60 : x
  2. Step 2: Convert to fraction form
    390,593.60/585,890.40 = 95,105.60/x
  3. Step 3: Cross multiply
    390,593.60x = 585,890.40 × 95,105.60
  4. Step 4: Simplify right side
    390,593.60x = 55,721,458,026.24
  5. Step 5: Solve for x
    x = 55,721,458,026.24/390,593.60
  6. Step 6: Final answer
    x = 142,658.40

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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.