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Finding the Fourth Proportional to 371,255.75, 555,941.65 and 311,126.11

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Solution

The fourth proportional to 371,255.75, 555,941.65 and 311,126.11 is: 465,899.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,255.75 : 555,941.65 = 311,126.11 : x
  2. Step 2: Convert to fraction form
    371,255.75/555,941.65 = 311,126.11/x
  3. Step 3: Cross multiply
    371,255.75x = 555,941.65 × 311,126.11
  4. Step 4: Simplify right side
    371,255.75x = 172,967,960,171.77
  5. Step 5: Solve for x
    x = 172,967,960,171.77/371,255.75
  6. Step 6: Final answer
    x = 465,899.75

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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.