Home / 272,384.10-408,576.20-72,705.24

Finding the Fourth Proportional to 272,384.10, 408,576.20 and 72,705.24

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Solution

The fourth proportional to 272,384.10, 408,576.20 and 72,705.24 is: 109,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,384.10 : 408,576.20 = 72,705.24 : x
  2. Step 2: Convert to fraction form
    272,384.10/408,576.20 = 72,705.24/x
  3. Step 3: Cross multiply
    272,384.10x = 408,576.20 × 72,705.24
  4. Step 4: Simplify right side
    272,384.10x = 29,705,630,315.76
  5. Step 5: Solve for x
    x = 29,705,630,315.76/272,384.10
  6. Step 6: Final answer
    x = 109,057.87

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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.