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Finding the Fourth Proportional to 404,311.10, 606,466.65 and 138,031.70

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Solution

The fourth proportional to 404,311.10, 606,466.65 and 138,031.70 is: 207,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,311.10 : 606,466.65 = 138,031.70 : x
  2. Step 2: Convert to fraction form
    404,311.10/606,466.65 = 138,031.70/x
  3. Step 3: Cross multiply
    404,311.10x = 606,466.65 × 138,031.70
  4. Step 4: Simplify right side
    404,311.10x = 83,711,622,692.81
  5. Step 5: Solve for x
    x = 83,711,622,692.81/404,311.10
  6. Step 6: Final answer
    x = 207,047.55

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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.