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Finding the Fourth Proportional to 218,811.60, 328,217.40 and 52,599.60

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Solution

The fourth proportional to 218,811.60, 328,217.40 and 52,599.60 is: 78,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,811.60 : 328,217.40 = 52,599.60 : x
  2. Step 2: Convert to fraction form
    218,811.60/328,217.40 = 52,599.60/x
  3. Step 3: Cross multiply
    218,811.60x = 328,217.40 × 52,599.60
  4. Step 4: Simplify right side
    218,811.60x = 17,264,103,953.04
  5. Step 5: Solve for x
    x = 17,264,103,953.04/218,811.60
  6. Step 6: Final answer
    x = 78,899.40

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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.