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Finding the Fourth Proportional to 287,577.80, 396,857.76 and 160,250.60

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Solution

The fourth proportional to 287,577.80, 396,857.76 and 160,250.60 is: 221,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,577.80 : 396,857.76 = 160,250.60 : x
  2. Step 2: Convert to fraction form
    287,577.80/396,857.76 = 160,250.60/x
  3. Step 3: Cross multiply
    287,577.80x = 396,857.76 × 160,250.60
  4. Step 4: Simplify right side
    287,577.80x = 63,596,694,154.66
  5. Step 5: Solve for x
    x = 63,596,694,154.66/287,577.80
  6. Step 6: Final answer
    x = 221,146.05

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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.