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Finding the Fourth Proportional to 245,615.29, 368,306.24 and 85,671.79

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Solution

The fourth proportional to 245,615.29, 368,306.24 and 85,671.79 is: 128,466.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,615.29 : 368,306.24 = 85,671.79 : x
  2. Step 2: Convert to fraction form
    245,615.29/368,306.24 = 85,671.79/x
  3. Step 3: Cross multiply
    245,615.29x = 368,306.24 × 85,671.79
  4. Step 4: Simplify right side
    245,615.29x = 31,553,453,499.85
  5. Step 5: Solve for x
    x = 31,553,453,499.85/245,615.29
  6. Step 6: Final answer
    x = 128,466.98

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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.