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Finding the Fourth Proportional to 384,008.80, 576,704.40 and 278,946.40

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Solution

The fourth proportional to 384,008.80, 576,704.40 and 278,946.40 is: 418,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,008.80 : 576,704.40 = 278,946.40 : x
  2. Step 2: Convert to fraction form
    384,008.80/576,704.40 = 278,946.40/x
  3. Step 3: Cross multiply
    384,008.80x = 576,704.40 × 278,946.40
  4. Step 4: Simplify right side
    384,008.80x = 160,869,616,244.16
  5. Step 5: Solve for x
    x = 160,869,616,244.16/384,008.80
  6. Step 6: Final answer
    x = 418,921.69

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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.