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Finding the Fourth Proportional to 371,256.75, 555,943.15 and 311,127.11

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Solution

The fourth proportional to 371,256.75, 555,943.15 and 311,127.11 is: 465,901.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,256.75 : 555,943.15 = 311,127.11 : x
  2. Step 2: Convert to fraction form
    371,256.75/555,943.15 = 311,127.11/x
  3. Step 3: Cross multiply
    371,256.75x = 555,943.15 × 311,127.11
  4. Step 4: Simplify right side
    371,256.75x = 172,968,985,583.80
  5. Step 5: Solve for x
    x = 172,968,985,583.80/371,256.75
  6. Step 6: Final answer
    x = 465,901.25

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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.