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Finding the Fourth Proportional to 485,139.70, 727,709.55 and 366,166.90

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Solution

The fourth proportional to 485,139.70, 727,709.55 and 366,166.90 is: 549,250.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,139.70 : 727,709.55 = 366,166.90 : x
  2. Step 2: Convert to fraction form
    485,139.70/727,709.55 = 366,166.90/x
  3. Step 3: Cross multiply
    485,139.70x = 727,709.55 × 366,166.90
  4. Step 4: Simplify right side
    485,139.70x = 266,463,150,023.90
  5. Step 5: Solve for x
    x = 266,463,150,023.90/485,139.70
  6. Step 6: Final answer
    x = 549,250.35

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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.