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Finding the Fourth Proportional to 287,473.95, 396,731.42 and 158,412.21

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Solution

The fourth proportional to 287,473.95, 396,731.42 and 158,412.21 is: 218,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,473.95 : 396,731.42 = 158,412.21 : x
  2. Step 2: Convert to fraction form
    287,473.95/396,731.42 = 158,412.21/x
  3. Step 3: Cross multiply
    287,473.95x = 396,731.42 × 158,412.21
  4. Step 4: Simplify right side
    287,473.95x = 62,847,099,332.88
  5. Step 5: Solve for x
    x = 62,847,099,332.88/287,473.95
  6. Step 6: Final answer
    x = 218,618.41

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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.