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Finding the Fourth Proportional to 266,342.04, 399,440.16 and 79,348.68

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Solution

The fourth proportional to 266,342.04, 399,440.16 and 79,348.68 is: 119,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,342.04 : 399,440.16 = 79,348.68 : x
  2. Step 2: Convert to fraction form
    266,342.04/399,440.16 = 79,348.68/x
  3. Step 3: Cross multiply
    266,342.04x = 399,440.16 × 79,348.68
  4. Step 4: Simplify right side
    266,342.04x = 31,695,049,434.99
  5. Step 5: Solve for x
    x = 31,695,049,434.99/266,342.04
  6. Step 6: Final answer
    x = 119,001.30

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1.5x scale

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.