Home / 279,938.35-386,320.72-157,433.07

Finding the Fourth Proportional to 279,938.35, 386,320.72 and 157,433.07

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Solution

The fourth proportional to 279,938.35, 386,320.72 and 157,433.07 is: 217,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938.35 : 386,320.72 = 157,433.07 : x
  2. Step 2: Convert to fraction form
    279,938.35/386,320.72 = 157,433.07/x
  3. Step 3: Cross multiply
    279,938.35x = 386,320.72 × 157,433.07
  4. Step 4: Simplify right side
    279,938.35x = 60,819,656,954.21
  5. Step 5: Solve for x
    x = 60,819,656,954.21/279,938.35
  6. Step 6: Final answer
    x = 217,260.90

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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.