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Finding the Fourth Proportional to 339,000.68, 508,508.71 and 86,280.19

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Solution

The fourth proportional to 339,000.68, 508,508.71 and 86,280.19 is: 129,422.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,000.68 : 508,508.71 = 86,280.19 : x
  2. Step 2: Convert to fraction form
    339,000.68/508,508.71 = 86,280.19/x
  3. Step 3: Cross multiply
    339,000.68x = 508,508.71 × 86,280.19
  4. Step 4: Simplify right side
    339,000.68x = 43,874,226,871.15
  5. Step 5: Solve for x
    x = 43,874,226,871.15/339,000.68
  6. Step 6: Final answer
    x = 129,422.24

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1.5x scale

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.