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Finding the Fourth Proportional to 250,399.76, 375,616.95 and 100,640.18

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Solution

The fourth proportional to 250,399.76, 375,616.95 and 100,640.18 is: 150,967.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,399.76 : 375,616.95 = 100,640.18 : x
  2. Step 2: Convert to fraction form
    250,399.76/375,616.95 = 100,640.18/x
  3. Step 3: Cross multiply
    250,399.76x = 375,616.95 × 100,640.18
  4. Step 4: Simplify right side
    250,399.76x = 37,802,157,459.05
  5. Step 5: Solve for x
    x = 37,802,157,459.05/250,399.76
  6. Step 6: Final answer
    x = 150,967.23

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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.