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Finding the Fourth Proportional to 250,424.98, 375,640.35 and 90,513.06

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Solution

The fourth proportional to 250,424.98, 375,640.35 and 90,513.06 is: 135,770.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,424.98 : 375,640.35 = 90,513.06 : x
  2. Step 2: Convert to fraction form
    250,424.98/375,640.35 = 90,513.06/x
  3. Step 3: Cross multiply
    250,424.98x = 375,640.35 × 90,513.06
  4. Step 4: Simplify right side
    250,424.98x = 34,000,357,537.97
  5. Step 5: Solve for x
    x = 34,000,357,537.97/250,424.98
  6. Step 6: Final answer
    x = 135,770.63

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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.