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Finding the Fourth Proportional to 376,875.84, 520,086.96 and 215,730

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Solution

The fourth proportional to 376,875.84, 520,086.96 and 215,730 is: 297,706.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,875.84 : 520,086.96 = 215,730 : x
  2. Step 2: Convert to fraction form
    376,875.84/520,086.96 = 215,730/x
  3. Step 3: Cross multiply
    376,875.84x = 520,086.96 × 215,730
  4. Step 4: Simplify right side
    376,875.84x = 112,198,359,880.80
  5. Step 5: Solve for x
    x = 112,198,359,880.80/376,875.84
  6. Step 6: Final answer
    x = 297,706.43

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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.