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Finding the Fourth Proportional to 482,365.79, 723,315 and 145,343.62

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Solution

The fourth proportional to 482,365.79, 723,315 and 145,343.62 is: 217,945.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,365.79 : 723,315 = 145,343.62 : x
  2. Step 2: Convert to fraction form
    482,365.79/723,315 = 145,343.62/x
  3. Step 3: Cross multiply
    482,365.79x = 723,315 × 145,343.62
  4. Step 4: Simplify right side
    482,365.79x = 105,129,220,500.30
  5. Step 5: Solve for x
    x = 105,129,220,500.30/482,365.79
  6. Step 6: Final answer
    x = 217,945.02

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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.