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Finding the Fourth Proportional to 342,703.80, 513,687.96 and 142,873.56

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Solution

The fourth proportional to 342,703.80, 513,687.96 and 142,873.56 is: 214,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,703.80 : 513,687.96 = 142,873.56 : x
  2. Step 2: Convert to fraction form
    342,703.80/513,687.96 = 142,873.56/x
  3. Step 3: Cross multiply
    342,703.80x = 513,687.96 × 142,873.56
  4. Step 4: Simplify right side
    342,703.80x = 73,392,427,574.34
  5. Step 5: Solve for x
    x = 73,392,427,574.34/342,703.80
  6. Step 6: Final answer
    x = 214,157.03

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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.