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Finding the Fourth Proportional to 307,251.88, 424,005.06 and 171,284.20

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Solution

The fourth proportional to 307,251.88, 424,005.06 and 171,284.20 is: 236,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,251.88 : 424,005.06 = 171,284.20 : x
  2. Step 2: Convert to fraction form
    307,251.88/424,005.06 = 171,284.20/x
  3. Step 3: Cross multiply
    307,251.88x = 424,005.06 × 171,284.20
  4. Step 4: Simplify right side
    307,251.88x = 72,625,367,498.05
  5. Step 5: Solve for x
    x = 72,625,367,498.05/307,251.88
  6. Step 6: Final answer
    x = 236,370.78

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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.