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Finding the Fourth Proportional to 342,232.95, 513,384.63 and 129,180.32

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Solution

The fourth proportional to 342,232.95, 513,384.63 and 129,180.32 is: 193,783.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,232.95 : 513,384.63 = 129,180.32 : x
  2. Step 2: Convert to fraction form
    342,232.95/513,384.63 = 129,180.32/x
  3. Step 3: Cross multiply
    342,232.95x = 513,384.63 × 129,180.32
  4. Step 4: Simplify right side
    342,232.95x = 66,319,188,219.56
  5. Step 5: Solve for x
    x = 66,319,188,219.56/342,232.95
  6. Step 6: Final answer
    x = 193,783.76

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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.