Home / 257,143.20-385,576.56-79,573.92

Finding the Fourth Proportional to 257,143.20, 385,576.56 and 79,573.92

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Solution

The fourth proportional to 257,143.20, 385,576.56 and 79,573.92 is: 119,318.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,143.20 : 385,576.56 = 79,573.92 : x
  2. Step 2: Convert to fraction form
    257,143.20/385,576.56 = 79,573.92/x
  3. Step 3: Cross multiply
    257,143.20x = 385,576.56 × 79,573.92
  4. Step 4: Simplify right side
    257,143.20x = 30,681,838,339.32
  5. Step 5: Solve for x
    x = 30,681,838,339.32/257,143.20
  6. Step 6: Final answer
    x = 119,318.10

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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.