Home / 231,915.20-319,901.51-153,332.89

Finding the Fourth Proportional to 231,915.20, 319,901.51 and 153,332.89

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Solution

The fourth proportional to 231,915.20, 319,901.51 and 153,332.89 is: 211,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,915.20 : 319,901.51 = 153,332.89 : x
  2. Step 2: Convert to fraction form
    231,915.20/319,901.51 = 153,332.89/x
  3. Step 3: Cross multiply
    231,915.20x = 319,901.51 × 153,332.89
  4. Step 4: Simplify right side
    231,915.20x = 49,051,422,627.24
  5. Step 5: Solve for x
    x = 49,051,422,627.24/231,915.20
  6. Step 6: Final answer
    x = 211,505.86

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1.5x scale

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.