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Finding the Fourth Proportional to 266,295.06, 399,420.72 and 79,306.56

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Solution

The fourth proportional to 266,295.06, 399,420.72 and 79,306.56 is: 118,953.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,295.06 : 399,420.72 = 79,306.56 : x
  2. Step 2: Convert to fraction form
    266,295.06/399,420.72 = 79,306.56/x
  3. Step 3: Cross multiply
    266,295.06x = 399,420.72 × 79,306.56
  4. Step 4: Simplify right side
    266,295.06x = 31,676,683,295.92
  5. Step 5: Solve for x
    x = 31,676,683,295.92/266,295.06
  6. Step 6: Final answer
    x = 118,953.33

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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.