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Finding the Fourth Proportional to 279,823.60, 386,170.26 and 157,354.52

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Solution

The fourth proportional to 279,823.60, 386,170.26 and 157,354.52 is: 217,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,823.60 : 386,170.26 = 157,354.52 : x
  2. Step 2: Convert to fraction form
    279,823.60/386,170.26 = 157,354.52/x
  3. Step 3: Cross multiply
    279,823.60x = 386,170.26 × 157,354.52
  4. Step 4: Simplify right side
    279,823.60x = 60,765,636,866.00
  5. Step 5: Solve for x
    x = 60,765,636,866.00/279,823.60
  6. Step 6: Final answer
    x = 217,156.94

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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.