Home / 327,931.88-491,897.81-91,280.72

Finding the Fourth Proportional to 327,931.88, 491,897.81 and 91,280.72

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Solution

The fourth proportional to 327,931.88, 491,897.81 and 91,280.72 is: 136,921.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,931.88 : 491,897.81 = 91,280.72 : x
  2. Step 2: Convert to fraction form
    327,931.88/491,897.81 = 91,280.72/x
  3. Step 3: Cross multiply
    327,931.88x = 491,897.81 × 91,280.72
  4. Step 4: Simplify right side
    327,931.88x = 44,900,787,721.17
  5. Step 5: Solve for x
    x = 44,900,787,721.17/327,931.88
  6. Step 6: Final answer
    x = 136,921.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.