Home / 231,208.40-319,337.16-155,637.20

Finding the Fourth Proportional to 231,208.40, 319,337.16 and 155,637.20

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Solution

The fourth proportional to 231,208.40, 319,337.16 and 155,637.20 is: 214,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,208.40 : 319,337.16 = 155,637.20 : x
  2. Step 2: Convert to fraction form
    231,208.40/319,337.16 = 155,637.20/x
  3. Step 3: Cross multiply
    231,208.40x = 319,337.16 × 155,637.20
  4. Step 4: Simplify right side
    231,208.40x = 49,700,741,438.35
  5. Step 5: Solve for x
    x = 49,700,741,438.35/231,208.40
  6. Step 6: Final answer
    x = 214,960.79

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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.