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Finding the Fourth Proportional to 377,687.20, 521,223.20 and 207,937.12

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Solution

The fourth proportional to 377,687.20, 521,223.20 and 207,937.12 is: 286,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,687.20 : 521,223.20 = 207,937.12 : x
  2. Step 2: Convert to fraction form
    377,687.20/521,223.20 = 207,937.12/x
  3. Step 3: Cross multiply
    377,687.20x = 521,223.20 × 207,937.12
  4. Step 4: Simplify right side
    377,687.20x = 108,381,651,085.18
  5. Step 5: Solve for x
    x = 108,381,651,085.18/377,687.20
  6. Step 6: Final answer
    x = 286,961.41

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1.5x scale

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.