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Finding the Fourth Proportional to 376,528.64, 564,775.68 and 127,212.80

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Solution

The fourth proportional to 376,528.64, 564,775.68 and 127,212.80 is: 190,813.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,528.64 : 564,775.68 = 127,212.80 : x
  2. Step 2: Convert to fraction form
    376,528.64/564,775.68 = 127,212.80/x
  3. Step 3: Cross multiply
    376,528.64x = 564,775.68 × 127,212.80
  4. Step 4: Simplify right side
    376,528.64x = 71,846,695,624.70
  5. Step 5: Solve for x
    x = 71,846,695,624.70/376,528.64
  6. Step 6: Final answer
    x = 190,813.36

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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.