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Finding the Fourth Proportional to 257,326.11, 355,110.12 and 156,724.11

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Solution

The fourth proportional to 257,326.11, 355,110.12 and 156,724.11 is: 216,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,326.11 : 355,110.12 = 156,724.11 : x
  2. Step 2: Convert to fraction form
    257,326.11/355,110.12 = 156,724.11/x
  3. Step 3: Cross multiply
    257,326.11x = 355,110.12 × 156,724.11
  4. Step 4: Simplify right side
    257,326.11x = 55,654,317,508.99
  5. Step 5: Solve for x
    x = 55,654,317,508.99/257,326.11
  6. Step 6: Final answer
    x = 216,279.33

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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.