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Finding the Fourth Proportional to 577,629.10, 866,501.55 and 198,499.90

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Solution

The fourth proportional to 577,629.10, 866,501.55 and 198,499.90 is: 297,769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,629.10 : 866,501.55 = 198,499.90 : x
  2. Step 2: Convert to fraction form
    577,629.10/866,501.55 = 198,499.90/x
  3. Step 3: Cross multiply
    577,629.10x = 866,501.55 × 198,499.90
  4. Step 4: Simplify right side
    577,629.10x = 172,000,471,024.85
  5. Step 5: Solve for x
    x = 172,000,471,024.85/577,629.10
  6. Step 6: Final answer
    x = 297,769.75

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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.