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Finding the Fourth Proportional to 320,489.68, 480,531 and 170,637.52

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Solution

The fourth proportional to 320,489.68, 480,531 and 170,637.52 is: 255,847.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,489.68 : 480,531 = 170,637.52 : x
  2. Step 2: Convert to fraction form
    320,489.68/480,531 = 170,637.52/x
  3. Step 3: Cross multiply
    320,489.68x = 480,531 × 170,637.52
  4. Step 4: Simplify right side
    320,489.68x = 81,996,618,123.12
  5. Step 5: Solve for x
    x = 81,996,618,123.12/320,489.68
  6. Step 6: Final answer
    x = 255,847.92

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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.