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Finding the Fourth Proportional to 280,396.92, 387,086.49 and 173,026.08

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Solution

The fourth proportional to 280,396.92, 387,086.49 and 173,026.08 is: 238,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,396.92 : 387,086.49 = 173,026.08 : x
  2. Step 2: Convert to fraction form
    280,396.92/387,086.49 = 173,026.08/x
  3. Step 3: Cross multiply
    280,396.92x = 387,086.49 × 173,026.08
  4. Step 4: Simplify right side
    280,396.92x = 66,976,057,985.66
  5. Step 5: Solve for x
    x = 66,976,057,985.66/280,396.92
  6. Step 6: Final answer
    x = 238,861.60

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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.