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Finding the Fourth Proportional to 266,381.34, 399,753.45 and 141,809.82

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Solution

The fourth proportional to 266,381.34, 399,753.45 and 141,809.82 is: 212,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,381.34 : 399,753.45 = 141,809.82 : x
  2. Step 2: Convert to fraction form
    266,381.34/399,753.45 = 141,809.82/x
  3. Step 3: Cross multiply
    266,381.34x = 399,753.45 × 141,809.82
  4. Step 4: Simplify right side
    266,381.34x = 56,688,964,788.88
  5. Step 5: Solve for x
    x = 56,688,964,788.88/266,381.34
  6. Step 6: Final answer
    x = 212,811.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.