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Finding the Fourth Proportional to 228,570.17, 342,877.80 and 78,790.74

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Solution

The fourth proportional to 228,570.17, 342,877.80 and 78,790.74 is: 118,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,570.17 : 342,877.80 = 78,790.74 : x
  2. Step 2: Convert to fraction form
    228,570.17/342,877.80 = 78,790.74/x
  3. Step 3: Cross multiply
    228,570.17x = 342,877.80 × 78,790.74
  4. Step 4: Simplify right side
    228,570.17x = 27,015,595,591.57
  5. Step 5: Solve for x
    x = 27,015,595,591.57/228,570.17
  6. Step 6: Final answer
    x = 118,193.88

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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.