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Finding the Fourth Proportional to 287,380.56, 396,570.12 and 160,053.84

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Solution

The fourth proportional to 287,380.56, 396,570.12 and 160,053.84 is: 220,865.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,380.56 : 396,570.12 = 160,053.84 : x
  2. Step 2: Convert to fraction form
    287,380.56/396,570.12 = 160,053.84/x
  3. Step 3: Cross multiply
    287,380.56x = 396,570.12 × 160,053.84
  4. Step 4: Simplify right side
    287,380.56x = 63,472,570,535.26
  5. Step 5: Solve for x
    x = 63,472,570,535.26/287,380.56
  6. Step 6: Final answer
    x = 220,865.92

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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.