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Finding the Fourth Proportional to 377,690.72, 521,215.16 and 207,924.84

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Solution

The fourth proportional to 377,690.72, 521,215.16 and 207,924.84 is: 286,937.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,690.72 : 521,215.16 = 207,924.84 : x
  2. Step 2: Convert to fraction form
    377,690.72/521,215.16 = 207,924.84/x
  3. Step 3: Cross multiply
    377,690.72x = 521,215.16 × 207,924.84
  4. Step 4: Simplify right side
    377,690.72x = 108,373,577,708.95
  5. Step 5: Solve for x
    x = 108,373,577,708.95/377,690.72
  6. Step 6: Final answer
    x = 286,937.36

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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.