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Finding the Fourth Proportional to 463,145.75, 639,141.14 and 251,177.75

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Solution

The fourth proportional to 463,145.75, 639,141.14 and 251,177.75 is: 346,625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,145.75 : 639,141.14 = 251,177.75 : x
  2. Step 2: Convert to fraction form
    463,145.75/639,141.14 = 251,177.75/x
  3. Step 3: Cross multiply
    463,145.75x = 639,141.14 × 251,177.75
  4. Step 4: Simplify right side
    463,145.75x = 160,538,032,221.75
  5. Step 5: Solve for x
    x = 160,538,032,221.75/463,145.75
  6. Step 6: Final answer
    x = 346,625.30

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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.