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Finding the Fourth Proportional to 376,813.49, 520,031.54 and 215,719.07

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Solution

The fourth proportional to 376,813.49, 520,031.54 and 215,719.07 is: 297,708.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,813.49 : 520,031.54 = 215,719.07 : x
  2. Step 2: Convert to fraction form
    376,813.49/520,031.54 = 215,719.07/x
  3. Step 3: Cross multiply
    376,813.49x = 520,031.54 × 215,719.07
  4. Step 4: Simplify right side
    376,813.49x = 112,180,718,118.61
  5. Step 5: Solve for x
    x = 112,180,718,118.61/376,813.49
  6. Step 6: Final answer
    x = 297,708.87

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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.