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Finding the Fourth Proportional to 324,265.70, 486,139.35 and 137,123.30

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Solution

The fourth proportional to 324,265.70, 486,139.35 and 137,123.30 is: 205,575.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,265.70 : 486,139.35 = 137,123.30 : x
  2. Step 2: Convert to fraction form
    324,265.70/486,139.35 = 137,123.30/x
  3. Step 3: Cross multiply
    324,265.70x = 486,139.35 × 137,123.30
  4. Step 4: Simplify right side
    324,265.70x = 66,661,031,931.86
  5. Step 5: Solve for x
    x = 66,661,031,931.86/324,265.70
  6. Step 6: Final answer
    x = 205,575.34

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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.