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Finding the Fourth Proportional to 283,960.99, 391,835.91 and 156,636.59

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Solution

The fourth proportional to 283,960.99, 391,835.91 and 156,636.59 is: 216,141.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,960.99 : 391,835.91 = 156,636.59 : x
  2. Step 2: Convert to fraction form
    283,960.99/391,835.91 = 156,636.59/x
  3. Step 3: Cross multiply
    283,960.99x = 391,835.91 × 156,636.59
  4. Step 4: Simplify right side
    283,960.99x = 61,375,838,088.53
  5. Step 5: Solve for x
    x = 61,375,838,088.53/283,960.99
  6. Step 6: Final answer
    x = 216,141.79

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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.