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Finding the Fourth Proportional to 280,800.54, 387,459.92 and 159,944.18

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Solution

The fourth proportional to 280,800.54, 387,459.92 and 159,944.18 is: 220,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,800.54 : 387,459.92 = 159,944.18 : x
  2. Step 2: Convert to fraction form
    280,800.54/387,459.92 = 159,944.18/x
  3. Step 3: Cross multiply
    280,800.54x = 387,459.92 × 159,944.18
  4. Step 4: Simplify right side
    280,800.54x = 61,971,959,187.27
  5. Step 5: Solve for x
    x = 61,971,959,187.27/280,800.54
  6. Step 6: Final answer
    x = 220,697.44

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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.