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Finding the Fourth Proportional to 342,612.70, 513,943.35 and 105,974.44

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Solution

The fourth proportional to 342,612.70, 513,943.35 and 105,974.44 is: 158,969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,612.70 : 513,943.35 = 105,974.44 : x
  2. Step 2: Convert to fraction form
    342,612.70/513,943.35 = 105,974.44/x
  3. Step 3: Cross multiply
    342,612.70x = 513,943.35 × 105,974.44
  4. Step 4: Simplify right side
    342,612.70x = 54,464,858,707.97
  5. Step 5: Solve for x
    x = 54,464,858,707.97/342,612.70
  6. Step 6: Final answer
    x = 158,969.18

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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.