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Finding the Fourth Proportional to 376,700.40, 564,872.40 and 218,977.20

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Solution

The fourth proportional to 376,700.40, 564,872.40 and 218,977.20 is: 328,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,700.40 : 564,872.40 = 218,977.20 : x
  2. Step 2: Convert to fraction form
    376,700.40/564,872.40 = 218,977.20/x
  3. Step 3: Cross multiply
    376,700.40x = 564,872.40 × 218,977.20
  4. Step 4: Simplify right side
    376,700.40x = 123,694,176,509.28
  5. Step 5: Solve for x
    x = 123,694,176,509.28/376,700.40
  6. Step 6: Final answer
    x = 328,362.21

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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.