Home / 279,824.60-386,171.64-157,355.52

Finding the Fourth Proportional to 279,824.60, 386,171.64 and 157,355.52

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Solution

The fourth proportional to 279,824.60, 386,171.64 and 157,355.52 is: 217,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,824.60 : 386,171.64 = 157,355.52 : x
  2. Step 2: Convert to fraction form
    279,824.60/386,171.64 = 157,355.52/x
  3. Step 3: Cross multiply
    279,824.60x = 386,171.64 × 157,355.52
  4. Step 4: Simplify right side
    279,824.60x = 60,766,239,221.45
  5. Step 5: Solve for x
    x = 60,766,239,221.45/279,824.60
  6. Step 6: Final answer
    x = 217,158.32

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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.