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Finding the Fourth Proportional to 218,892.54, 328,336.77 and 61,120.74

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Solution

The fourth proportional to 218,892.54, 328,336.77 and 61,120.74 is: 91,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,892.54 : 328,336.77 = 61,120.74 : x
  2. Step 2: Convert to fraction form
    218,892.54/328,336.77 = 61,120.74/x
  3. Step 3: Cross multiply
    218,892.54x = 328,336.77 × 61,120.74
  4. Step 4: Simplify right side
    218,892.54x = 20,068,186,351.61
  5. Step 5: Solve for x
    x = 20,068,186,351.61/218,892.54
  6. Step 6: Final answer
    x = 91,680.54

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1.5x scale

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.