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Finding the Fourth Proportional to 545,869.60, 818,691.42 and 146,415.40

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Solution

The fourth proportional to 545,869.60, 818,691.42 and 146,415.40 is: 219,592.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,869.60 : 818,691.42 = 146,415.40 : x
  2. Step 2: Convert to fraction form
    545,869.60/818,691.42 = 146,415.40/x
  3. Step 3: Cross multiply
    545,869.60x = 818,691.42 × 146,415.40
  4. Step 4: Simplify right side
    545,869.60x = 119,869,031,735.87
  5. Step 5: Solve for x
    x = 119,869,031,735.87/545,869.60
  6. Step 6: Final answer
    x = 219,592.80

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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.