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Finding the Fourth Proportional to 235,655.20, 353,223.60 and 102,512.80

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Solution

The fourth proportional to 235,655.20, 353,223.60 and 102,512.80 is: 153,656.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,655.20 : 353,223.60 = 102,512.80 : x
  2. Step 2: Convert to fraction form
    235,655.20/353,223.60 = 102,512.80/x
  3. Step 3: Cross multiply
    235,655.20x = 353,223.60 × 102,512.80
  4. Step 4: Simplify right side
    235,655.20x = 36,209,940,262.08
  5. Step 5: Solve for x
    x = 36,209,940,262.08/235,655.20
  6. Step 6: Final answer
    x = 153,656.44

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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.