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Finding the Fourth Proportional to 363,417.20, 545,125.80 and 268,938.80

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Solution

The fourth proportional to 363,417.20, 545,125.80 and 268,938.80 is: 403,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,417.20 : 545,125.80 = 268,938.80 : x
  2. Step 2: Convert to fraction form
    363,417.20/545,125.80 = 268,938.80/x
  3. Step 3: Cross multiply
    363,417.20x = 545,125.80 × 268,938.80
  4. Step 4: Simplify right side
    363,417.20x = 146,605,478,501.04
  5. Step 5: Solve for x
    x = 146,605,478,501.04/363,417.20
  6. Step 6: Final answer
    x = 403,408.20

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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.