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Finding the Fourth Proportional to 330,809.72, 496,244.18 and 128,401.08

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Solution

The fourth proportional to 330,809.72, 496,244.18 and 128,401.08 is: 192,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,809.72 : 496,244.18 = 128,401.08 : x
  2. Step 2: Convert to fraction form
    330,809.72/496,244.18 = 128,401.08/x
  3. Step 3: Cross multiply
    330,809.72x = 496,244.18 × 128,401.08
  4. Step 4: Simplify right side
    330,809.72x = 63,718,288,655.71
  5. Step 5: Solve for x
    x = 63,718,288,655.71/330,809.72
  6. Step 6: Final answer
    x = 192,613.11

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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.