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Finding the Fourth Proportional to 339,140.70, 508,711.05 and 260,651.10

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Solution

The fourth proportional to 339,140.70, 508,711.05 and 260,651.10 is: 390,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,140.70 : 508,711.05 = 260,651.10 : x
  2. Step 2: Convert to fraction form
    339,140.70/508,711.05 = 260,651.10/x
  3. Step 3: Cross multiply
    339,140.70x = 508,711.05 × 260,651.10
  4. Step 4: Simplify right side
    339,140.70x = 132,596,094,764.66
  5. Step 5: Solve for x
    x = 132,596,094,764.66/339,140.70
  6. Step 6: Final answer
    x = 390,976.65

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Similar ratio
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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.