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Finding the Fourth Proportional to 280,498.80, 387,124.92 and 159,616.56

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Solution

The fourth proportional to 280,498.80, 387,124.92 and 159,616.56 is: 220,291.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,498.80 : 387,124.92 = 159,616.56 : x
  2. Step 2: Convert to fraction form
    280,498.80/387,124.92 = 159,616.56/x
  3. Step 3: Cross multiply
    280,498.80x = 387,124.92 × 159,616.56
  4. Step 4: Simplify right side
    280,498.80x = 61,791,548,020.68
  5. Step 5: Solve for x
    x = 61,791,548,020.68/280,498.80
  6. Step 6: Final answer
    x = 220,291.67

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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.