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Finding the Fourth Proportional to 342,391.46, 513,253.26 and 142,768.88

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Solution

The fourth proportional to 342,391.46, 513,253.26 and 142,768.88 is: 214,014.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,391.46 : 513,253.26 = 142,768.88 : x
  2. Step 2: Convert to fraction form
    342,391.46/513,253.26 = 142,768.88/x
  3. Step 3: Cross multiply
    342,391.46x = 513,253.26 × 142,768.88
  4. Step 4: Simplify right side
    342,391.46x = 73,276,592,444.98
  5. Step 5: Solve for x
    x = 73,276,592,444.98/342,391.46
  6. Step 6: Final answer
    x = 214,014.08

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1.5x scale

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.