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Finding the Fourth Proportional to 377,679.12, 521,177.16 and 207,880.56

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Solution

The fourth proportional to 377,679.12, 521,177.16 and 207,880.56 is: 286,864.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,679.12 : 521,177.16 = 207,880.56 : x
  2. Step 2: Convert to fraction form
    377,679.12/521,177.16 = 207,880.56/x
  3. Step 3: Cross multiply
    377,679.12x = 521,177.16 × 207,880.56
  4. Step 4: Simplify right side
    377,679.12x = 108,342,599,880.01
  5. Step 5: Solve for x
    x = 108,342,599,880.01/377,679.12
  6. Step 6: Final answer
    x = 286,864.15

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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.