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Finding the Fourth Proportional to 540,871.50, 811,134.72 and 185,799.90

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Solution

The fourth proportional to 540,871.50, 811,134.72 and 185,799.90 is: 278,640.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,871.50 : 811,134.72 = 185,799.90 : x
  2. Step 2: Convert to fraction form
    540,871.50/811,134.72 = 185,799.90/x
  3. Step 3: Cross multiply
    540,871.50x = 811,134.72 × 185,799.90
  4. Step 4: Simplify right side
    540,871.50x = 150,708,749,862.53
  5. Step 5: Solve for x
    x = 150,708,749,862.53/540,871.50
  6. Step 6: Final answer
    x = 278,640.58

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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.