Home / 353,099.20-487,385.76-217,174.72

Finding the Fourth Proportional to 353,099.20, 487,385.76 and 217,174.72

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Solution

The fourth proportional to 353,099.20, 487,385.76 and 217,174.72 is: 299,768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,099.20 : 487,385.76 = 217,174.72 : x
  2. Step 2: Convert to fraction form
    353,099.20/487,385.76 = 217,174.72/x
  3. Step 3: Cross multiply
    353,099.20x = 487,385.76 × 217,174.72
  4. Step 4: Simplify right side
    353,099.20x = 105,847,865,959.99
  5. Step 5: Solve for x
    x = 105,847,865,959.99/353,099.20
  6. Step 6: Final answer
    x = 299,768.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.