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Finding the Fourth Proportional to 438,646.80, 658,661.40 and 252,022.80

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Solution

The fourth proportional to 438,646.80, 658,661.40 and 252,022.80 is: 378,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,646.80 : 658,661.40 = 252,022.80 : x
  2. Step 2: Convert to fraction form
    438,646.80/658,661.40 = 252,022.80/x
  3. Step 3: Cross multiply
    438,646.80x = 658,661.40 × 252,022.80
  4. Step 4: Simplify right side
    438,646.80x = 165,997,690,279.92
  5. Step 5: Solve for x
    x = 165,997,690,279.92/438,646.80
  6. Step 6: Final answer
    x = 378,431.33

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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.