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Finding the Fourth Proportional to 278,750.34, 384,618.69 and 169,781.58

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Solution

The fourth proportional to 278,750.34, 384,618.69 and 169,781.58 is: 234,264.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,750.34 : 384,618.69 = 169,781.58 : x
  2. Step 2: Convert to fraction form
    278,750.34/384,618.69 = 169,781.58/x
  3. Step 3: Cross multiply
    278,750.34x = 384,618.69 × 169,781.58
  4. Step 4: Simplify right side
    278,750.34x = 65,301,168,885.73
  5. Step 5: Solve for x
    x = 65,301,168,885.73/278,750.34
  6. Step 6: Final answer
    x = 234,264.00

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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.