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Finding the Fourth Proportional to 316,488.60, 474,737.70 and 103,255.56

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Solution

The fourth proportional to 316,488.60, 474,737.70 and 103,255.56 is: 154,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,488.60 : 474,737.70 = 103,255.56 : x
  2. Step 2: Convert to fraction form
    316,488.60/474,737.70 = 103,255.56/x
  3. Step 3: Cross multiply
    316,488.60x = 474,737.70 × 103,255.56
  4. Step 4: Simplify right side
    316,488.60x = 49,019,307,066.61
  5. Step 5: Solve for x
    x = 49,019,307,066.61/316,488.60
  6. Step 6: Final answer
    x = 154,884.91

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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.