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Finding the Fourth Proportional to 296,966.80, 445,402.80 and 86,555.52

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Solution

The fourth proportional to 296,966.80, 445,402.80 and 86,555.52 is: 129,819.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,966.80 : 445,402.80 = 86,555.52 : x
  2. Step 2: Convert to fraction form
    296,966.80/445,402.80 = 86,555.52/x
  3. Step 3: Cross multiply
    296,966.80x = 445,402.80 × 86,555.52
  4. Step 4: Simplify right side
    296,966.80x = 38,552,070,963.46
  5. Step 5: Solve for x
    x = 38,552,070,963.46/296,966.80
  6. Step 6: Final answer
    x = 129,819.46

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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.