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Finding the Fourth Proportional to 482,890.80, 725,027.40 and 272,938.80

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Solution

The fourth proportional to 482,890.80, 725,027.40 and 272,938.80 is: 409,798.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,890.80 : 725,027.40 = 272,938.80 : x
  2. Step 2: Convert to fraction form
    482,890.80/725,027.40 = 272,938.80/x
  3. Step 3: Cross multiply
    482,890.80x = 725,027.40 × 272,938.80
  4. Step 4: Simplify right side
    482,890.80x = 197,888,108,523.12
  5. Step 5: Solve for x
    x = 197,888,108,523.12/482,890.80
  6. Step 6: Final answer
    x = 409,798.88

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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.