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Finding the Fourth Proportional to 336,688.59, 504,737.18 and 137,176.78

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Solution

The fourth proportional to 336,688.59, 504,737.18 and 137,176.78 is: 205,644.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,688.59 : 504,737.18 = 137,176.78 : x
  2. Step 2: Convert to fraction form
    336,688.59/504,737.18 = 137,176.78/x
  3. Step 3: Cross multiply
    336,688.59x = 504,737.18 × 137,176.78
  4. Step 4: Simplify right side
    336,688.59x = 69,238,222,417.13
  5. Step 5: Solve for x
    x = 69,238,222,417.13/336,688.59
  6. Step 6: Final answer
    x = 205,644.69

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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.