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Finding the Fourth Proportional to 213,981.60, 321,663.60 and 152,080.80

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Solution

The fourth proportional to 213,981.60, 321,663.60 and 152,080.80 is: 228,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,981.60 : 321,663.60 = 152,080.80 : x
  2. Step 2: Convert to fraction form
    213,981.60/321,663.60 = 152,080.80/x
  3. Step 3: Cross multiply
    213,981.60x = 321,663.60 × 152,080.80
  4. Step 4: Simplify right side
    213,981.60x = 48,918,857,618.88
  5. Step 5: Solve for x
    x = 48,918,857,618.88/213,981.60
  6. Step 6: Final answer
    x = 228,612.45

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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.