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Finding the Fourth Proportional to 390,652.92, 586,037.87 and 141,393.24

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Solution

The fourth proportional to 390,652.92, 586,037.87 and 141,393.24 is: 212,111.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,652.92 : 586,037.87 = 141,393.24 : x
  2. Step 2: Convert to fraction form
    390,652.92/586,037.87 = 141,393.24/x
  3. Step 3: Cross multiply
    390,652.92x = 586,037.87 × 141,393.24
  4. Step 4: Simplify right side
    390,652.92x = 82,861,793,202.00
  5. Step 5: Solve for x
    x = 82,861,793,202.00/390,652.92
  6. Step 6: Final answer
    x = 212,111.03

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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.