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Finding the Fourth Proportional to 377,422.43, 520,850.90 and 207,656.87

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Solution

The fourth proportional to 377,422.43, 520,850.90 and 207,656.87 is: 286,570.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,422.43 : 520,850.90 = 207,656.87 : x
  2. Step 2: Convert to fraction form
    377,422.43/520,850.90 = 207,656.87/x
  3. Step 3: Cross multiply
    377,422.43x = 520,850.90 × 207,656.87
  4. Step 4: Simplify right side
    377,422.43x = 108,158,266,592.40
  5. Step 5: Solve for x
    x = 108,158,266,592.40/377,422.43
  6. Step 6: Final answer
    x = 286,570.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.