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Finding the Fourth Proportional to 280,167.82, 386,521.52 and 172,551.08

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Solution

The fourth proportional to 280,167.82, 386,521.52 and 172,551.08 is: 238,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,167.82 : 386,521.52 = 172,551.08 : x
  2. Step 2: Convert to fraction form
    280,167.82/386,521.52 = 172,551.08/x
  3. Step 3: Cross multiply
    280,167.82x = 386,521.52 × 172,551.08
  4. Step 4: Simplify right side
    280,167.82x = 66,694,705,719.24
  5. Step 5: Solve for x
    x = 66,694,705,719.24/280,167.82
  6. Step 6: Final answer
    x = 238,052.70

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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.