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Finding the Fourth Proportional to 340,372.05, 510,503.40 and 103,659.68

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Solution

The fourth proportional to 340,372.05, 510,503.40 and 103,659.68 is: 155,472.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,372.05 : 510,503.40 = 103,659.68 : x
  2. Step 2: Convert to fraction form
    340,372.05/510,503.40 = 103,659.68/x
  3. Step 3: Cross multiply
    340,372.05x = 510,503.40 × 103,659.68
  4. Step 4: Simplify right side
    340,372.05x = 52,918,619,082.91
  5. Step 5: Solve for x
    x = 52,918,619,082.91/340,372.05
  6. Step 6: Final answer
    x = 155,472.87

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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.