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Finding the Fourth Proportional to 319,393.53, 479,422.60 and 235,248.71

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Solution

The fourth proportional to 319,393.53, 479,422.60 and 235,248.71 is: 353,117.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,393.53 : 479,422.60 = 235,248.71 : x
  2. Step 2: Convert to fraction form
    319,393.53/479,422.60 = 235,248.71/x
  3. Step 3: Cross multiply
    319,393.53x = 479,422.60 × 235,248.71
  4. Step 4: Simplify right side
    319,393.53x = 112,783,545,209.61
  5. Step 5: Solve for x
    x = 112,783,545,209.61/319,393.53
  6. Step 6: Final answer
    x = 353,117.81

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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.