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Finding the Fourth Proportional to 376,877.84, 520,089.72 and 215,732

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Solution

The fourth proportional to 376,877.84, 520,089.72 and 215,732 is: 297,709.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,877.84 : 520,089.72 = 215,732 : x
  2. Step 2: Convert to fraction form
    376,877.84/520,089.72 = 215,732/x
  3. Step 3: Cross multiply
    376,877.84x = 520,089.72 × 215,732
  4. Step 4: Simplify right side
    376,877.84x = 112,199,995,475.04
  5. Step 5: Solve for x
    x = 112,199,995,475.04/376,877.84
  6. Step 6: Final answer
    x = 297,709.19

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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.