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Finding the Fourth Proportional to 218,125.60, 305,583.20 and 218,125.60

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Solution

The fourth proportional to 218,125.60, 305,583.20 and 218,125.60 is: 305,583.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,125.60 : 305,583.20 = 218,125.60 : x
  2. Step 2: Convert to fraction form
    218,125.60/305,583.20 = 218,125.60/x
  3. Step 3: Cross multiply
    218,125.60x = 305,583.20 × 218,125.60
  4. Step 4: Simplify right side
    218,125.60x = 66,655,518,849.92
  5. Step 5: Solve for x
    x = 66,655,518,849.92/218,125.60
  6. Step 6: Final answer
    x = 305,583.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.