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Finding the Fourth Proportional to 342,718.08, 513,994.32 and 132,221.76

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Solution

The fourth proportional to 342,718.08, 513,994.32 and 132,221.76 is: 198,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,718.08 : 513,994.32 = 132,221.76 : x
  2. Step 2: Convert to fraction form
    342,718.08/513,994.32 = 132,221.76/x
  3. Step 3: Cross multiply
    342,718.08x = 513,994.32 × 132,221.76
  4. Step 4: Simplify right side
    342,718.08x = 67,961,233,620.40
  5. Step 5: Solve for x
    x = 67,961,233,620.40/342,718.08
  6. Step 6: Final answer
    x = 198,300.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.