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Finding the Fourth Proportional to 280,588.60, 387,116.22 and 159,699.61

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Solution

The fourth proportional to 280,588.60, 387,116.22 and 159,699.61 is: 220,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,588.60 : 387,116.22 = 159,699.61 : x
  2. Step 2: Convert to fraction form
    280,588.60/387,116.22 = 159,699.61/x
  3. Step 3: Cross multiply
    280,588.60x = 387,116.22 × 159,699.61
  4. Step 4: Simplify right side
    280,588.60x = 61,822,309,358.67
  5. Step 5: Solve for x
    x = 61,822,309,358.67/280,588.60
  6. Step 6: Final answer
    x = 220,330.80

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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.