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Finding the Fourth Proportional to 266,510.39, 399,923.06 and 98,149.05

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Solution

The fourth proportional to 266,510.39, 399,923.06 and 98,149.05 is: 147,281.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,510.39 : 399,923.06 = 98,149.05 : x
  2. Step 2: Convert to fraction form
    266,510.39/399,923.06 = 98,149.05/x
  3. Step 3: Cross multiply
    266,510.39x = 399,923.06 × 98,149.05
  4. Step 4: Simplify right side
    266,510.39x = 39,252,067,921.35
  5. Step 5: Solve for x
    x = 39,252,067,921.35/266,510.39
  6. Step 6: Final answer
    x = 147,281.57

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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.