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Finding the Fourth Proportional to 404,600.10, 606,900.15 and 138,320.70

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Solution

The fourth proportional to 404,600.10, 606,900.15 and 138,320.70 is: 207,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,600.10 : 606,900.15 = 138,320.70 : x
  2. Step 2: Convert to fraction form
    404,600.10/606,900.15 = 138,320.70/x
  3. Step 3: Cross multiply
    404,600.10x = 606,900.15 × 138,320.70
  4. Step 4: Simplify right side
    404,600.10x = 83,946,853,578.11
  5. Step 5: Solve for x
    x = 83,946,853,578.11/404,600.10
  6. Step 6: Final answer
    x = 207,481.05

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1.5x scale

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.