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Finding the Fourth Proportional to 218,819.61, 328,284.74 and 61,047.95

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Solution

The fourth proportional to 218,819.61, 328,284.74 and 61,047.95 is: 91,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,819.61 : 328,284.74 = 61,047.95 : x
  2. Step 2: Convert to fraction form
    218,819.61/328,284.74 = 61,047.95/x
  3. Step 3: Cross multiply
    218,819.61x = 328,284.74 × 61,047.95
  4. Step 4: Simplify right side
    218,819.61x = 20,041,108,904.48
  5. Step 5: Solve for x
    x = 20,041,108,904.48/218,819.61
  6. Step 6: Final answer
    x = 91,587.35

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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.