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Finding the Fourth Proportional to 320,701.52, 442,275.72 and 275,365.28

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Solution

The fourth proportional to 320,701.52, 442,275.72 and 275,365.28 is: 379,753.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,701.52 : 442,275.72 = 275,365.28 : x
  2. Step 2: Convert to fraction form
    320,701.52/442,275.72 = 275,365.28/x
  3. Step 3: Cross multiply
    320,701.52x = 442,275.72 × 275,365.28
  4. Step 4: Simplify right side
    320,701.52x = 121,787,377,475.00
  5. Step 5: Solve for x
    x = 121,787,377,475.00/320,701.52
  6. Step 6: Final answer
    x = 379,753.04

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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.