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Finding the Fourth Proportional to 371,576.20, 557,364.30 and 259,601.80

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Solution

The fourth proportional to 371,576.20, 557,364.30 and 259,601.80 is: 389,402.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,576.20 : 557,364.30 = 259,601.80 : x
  2. Step 2: Convert to fraction form
    371,576.20/557,364.30 = 259,601.80/x
  3. Step 3: Cross multiply
    371,576.20x = 557,364.30 × 259,601.80
  4. Step 4: Simplify right side
    371,576.20x = 144,692,775,535.74
  5. Step 5: Solve for x
    x = 144,692,775,535.74/371,576.20
  6. Step 6: Final answer
    x = 389,402.70

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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.