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Finding the Fourth Proportional to 425,795.46, 638,730.08 and 155,996.88

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Solution

The fourth proportional to 425,795.46, 638,730.08 and 155,996.88 is: 234,008.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,795.46 : 638,730.08 = 155,996.88 : x
  2. Step 2: Convert to fraction form
    425,795.46/638,730.08 = 155,996.88/x
  3. Step 3: Cross multiply
    425,795.46x = 638,730.08 × 155,996.88
  4. Step 4: Simplify right side
    425,795.46x = 99,639,899,642.15
  5. Step 5: Solve for x
    x = 99,639,899,642.15/425,795.46
  6. Step 6: Final answer
    x = 234,008.84

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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.