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Finding the Fourth Proportional to 330,045.68, 454,646.76 and 281,488.88

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Solution

The fourth proportional to 330,045.68, 454,646.76 and 281,488.88 is: 387,758.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,045.68 : 454,646.76 = 281,488.88 : x
  2. Step 2: Convert to fraction form
    330,045.68/454,646.76 = 281,488.88/x
  3. Step 3: Cross multiply
    330,045.68x = 454,646.76 × 281,488.88
  4. Step 4: Simplify right side
    330,045.68x = 127,978,007,268.03
  5. Step 5: Solve for x
    x = 127,978,007,268.03/330,045.68
  6. Step 6: Final answer
    x = 387,758.47

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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.