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Finding the Fourth Proportional to 287,514.02, 396,772.05 and 158,457.20

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Solution

The fourth proportional to 287,514.02, 396,772.05 and 158,457.20 is: 218,672.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,514.02 : 396,772.05 = 158,457.20 : x
  2. Step 2: Convert to fraction form
    287,514.02/396,772.05 = 158,457.20/x
  3. Step 3: Cross multiply
    287,514.02x = 396,772.05 × 158,457.20
  4. Step 4: Simplify right side
    287,514.02x = 62,871,386,691.61
  5. Step 5: Solve for x
    x = 62,871,386,691.61/287,514.02
  6. Step 6: Final answer
    x = 218,672.42

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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.