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Finding the Fourth Proportional to 375,970.72, 563,991.78 and 136,145.20

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Solution

The fourth proportional to 375,970.72, 563,991.78 and 136,145.20 is: 204,230.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,970.72 : 563,991.78 = 136,145.20 : x
  2. Step 2: Convert to fraction form
    375,970.72/563,991.78 = 136,145.20/x
  3. Step 3: Cross multiply
    375,970.72x = 563,991.78 × 136,145.20
  4. Step 4: Simplify right side
    375,970.72x = 76,784,773,686.46
  5. Step 5: Solve for x
    x = 76,784,773,686.46/375,970.72
  6. Step 6: Final answer
    x = 204,230.73

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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.