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Finding the Fourth Proportional to 287,385.57, 396,588.15 and 160,062.08

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Solution

The fourth proportional to 287,385.57, 396,588.15 and 160,062.08 is: 220,883.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,385.57 : 396,588.15 = 160,062.08 : x
  2. Step 2: Convert to fraction form
    287,385.57/396,588.15 = 160,062.08/x
  3. Step 3: Cross multiply
    287,385.57x = 396,588.15 × 160,062.08
  4. Step 4: Simplify right side
    287,385.57x = 63,478,722,209.41
  5. Step 5: Solve for x
    x = 63,478,722,209.41/287,385.57
  6. Step 6: Final answer
    x = 220,883.47

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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.