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Finding the Fourth Proportional to 268,647.68, 370,722.11 and 147,781.30

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Solution

The fourth proportional to 268,647.68, 370,722.11 and 147,781.30 is: 203,931.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,647.68 : 370,722.11 = 147,781.30 : x
  2. Step 2: Convert to fraction form
    268,647.68/370,722.11 = 147,781.30/x
  3. Step 3: Cross multiply
    268,647.68x = 370,722.11 × 147,781.30
  4. Step 4: Simplify right side
    268,647.68x = 54,785,794,615.64
  5. Step 5: Solve for x
    x = 54,785,794,615.64/268,647.68
  6. Step 6: Final answer
    x = 203,931.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.