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Finding the Fourth Proportional to 287,635.52, 396,950.64 and 160,312.08

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Solution

The fourth proportional to 287,635.52, 396,950.64 and 160,312.08 is: 221,238.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,635.52 : 396,950.64 = 160,312.08 : x
  2. Step 2: Convert to fraction form
    287,635.52/396,950.64 = 160,312.08/x
  3. Step 3: Cross multiply
    287,635.52x = 396,950.64 × 160,312.08
  4. Step 4: Simplify right side
    287,635.52x = 63,635,982,755.73
  5. Step 5: Solve for x
    x = 63,635,982,755.73/287,635.52
  6. Step 6: Final answer
    x = 221,238.26

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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.