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Finding the Fourth Proportional to 467,487.60, 645,139.80 and 266,279.28

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Solution

The fourth proportional to 467,487.60, 645,139.80 and 266,279.28 is: 367,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,487.60 : 645,139.80 = 266,279.28 : x
  2. Step 2: Convert to fraction form
    467,487.60/645,139.80 = 266,279.28/x
  3. Step 3: Cross multiply
    467,487.60x = 645,139.80 × 266,279.28
  4. Step 4: Simplify right side
    467,487.60x = 171,787,361,443.34
  5. Step 5: Solve for x
    x = 171,787,361,443.34/467,487.60
  6. Step 6: Final answer
    x = 367,469.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.