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Finding the Fourth Proportional to 342,008.87, 513,068.43 and 105,351.32

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Solution

The fourth proportional to 342,008.87, 513,068.43 and 105,351.32 is: 158,043.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,008.87 : 513,068.43 = 105,351.32 : x
  2. Step 2: Convert to fraction form
    342,008.87/513,068.43 = 105,351.32/x
  3. Step 3: Cross multiply
    342,008.87x = 513,068.43 × 105,351.32
  4. Step 4: Simplify right side
    342,008.87x = 54,052,436,350.83
  5. Step 5: Solve for x
    x = 54,052,436,350.83/342,008.87
  6. Step 6: Final answer
    x = 158,043.96

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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.