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Finding the Fourth Proportional to 661,007.52, 991,503.36 and 240,279.84

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Solution

The fourth proportional to 661,007.52, 991,503.36 and 240,279.84 is: 360,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,007.52 : 991,503.36 = 240,279.84 : x
  2. Step 2: Convert to fraction form
    661,007.52/991,503.36 = 240,279.84/x
  3. Step 3: Cross multiply
    661,007.52x = 991,503.36 × 240,279.84
  4. Step 4: Simplify right side
    661,007.52x = 238,238,268,700.26
  5. Step 5: Solve for x
    x = 238,238,268,700.26/661,007.52
  6. Step 6: Final answer
    x = 360,416.88

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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.