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Finding the Fourth Proportional to 371,271.32, 555,964.92 and 311,141.68

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Solution

The fourth proportional to 371,271.32, 555,964.92 and 311,141.68 is: 465,923.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,271.32 : 555,964.92 = 311,141.68 : x
  2. Step 2: Convert to fraction form
    371,271.32/555,964.92 = 311,141.68/x
  3. Step 3: Cross multiply
    371,271.32x = 555,964.92 × 311,141.68
  4. Step 4: Simplify right side
    371,271.32x = 172,983,859,229.87
  5. Step 5: Solve for x
    x = 172,983,859,229.87/371,271.32
  6. Step 6: Final answer
    x = 465,923.03

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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.