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Finding the Fourth Proportional to 463,405.32, 639,350.64 and 259,426.20

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Solution

The fourth proportional to 463,405.32, 639,350.64 and 259,426.20 is: 357,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,405.32 : 639,350.64 = 259,426.20 : x
  2. Step 2: Convert to fraction form
    463,405.32/639,350.64 = 259,426.20/x
  3. Step 3: Cross multiply
    463,405.32x = 639,350.64 × 259,426.20
  4. Step 4: Simplify right side
    463,405.32x = 165,864,307,002.77
  5. Step 5: Solve for x
    x = 165,864,307,002.77/463,405.32
  6. Step 6: Final answer
    x = 357,924.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.