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Finding the Fourth Proportional to 266,031.84, 399,114.18 and 79,043.34

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Solution

The fourth proportional to 266,031.84, 399,114.18 and 79,043.34 is: 118,584.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,031.84 : 399,114.18 = 79,043.34 : x
  2. Step 2: Convert to fraction form
    266,031.84/399,114.18 = 79,043.34/x
  3. Step 3: Cross multiply
    266,031.84x = 399,114.18 × 79,043.34
  4. Step 4: Simplify right side
    266,031.84x = 31,547,317,828.56
  5. Step 5: Solve for x
    x = 31,547,317,828.56/266,031.84
  6. Step 6: Final answer
    x = 118,584.74

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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.