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Finding the Fourth Proportional to 308,759.20, 462,482.70 and 256,271.20

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Solution

The fourth proportional to 308,759.20, 462,482.70 and 256,271.20 is: 383,862.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,759.20 : 462,482.70 = 256,271.20 : x
  2. Step 2: Convert to fraction form
    308,759.20/462,482.70 = 256,271.20/x
  3. Step 3: Cross multiply
    308,759.20x = 462,482.70 × 256,271.20
  4. Step 4: Simplify right side
    308,759.20x = 118,520,996,508.24
  5. Step 5: Solve for x
    x = 118,520,996,508.24/308,759.20
  6. Step 6: Final answer
    x = 383,862.23

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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.