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Finding the Fourth Proportional to 266,690.98, 400,194.06 and 98,328.88

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Solution

The fourth proportional to 266,690.98, 400,194.06 and 98,328.88 is: 147,551.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,690.98 : 400,194.06 = 98,328.88 : x
  2. Step 2: Convert to fraction form
    266,690.98/400,194.06 = 98,328.88/x
  3. Step 3: Cross multiply
    266,690.98x = 400,194.06 × 98,328.88
  4. Step 4: Simplify right side
    266,690.98x = 39,350,633,702.45
  5. Step 5: Solve for x
    x = 39,350,633,702.45/266,690.98
  6. Step 6: Final answer
    x = 147,551.42

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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.