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Finding the Fourth Proportional to 315,172.85, 434,959.11 and 179,219.46

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Solution

The fourth proportional to 315,172.85, 434,959.11 and 179,219.46 is: 247,334.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,172.85 : 434,959.11 = 179,219.46 : x
  2. Step 2: Convert to fraction form
    315,172.85/434,959.11 = 179,219.46/x
  3. Step 3: Cross multiply
    315,172.85x = 434,959.11 × 179,219.46
  4. Step 4: Simplify right side
    315,172.85x = 77,953,136,816.28
  5. Step 5: Solve for x
    x = 77,953,136,816.28/315,172.85
  6. Step 6: Final answer
    x = 247,334.56

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1.5x scale

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.