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Finding the Fourth Proportional to 342,035.11, 513,053.88 and 105,376.60

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Solution

The fourth proportional to 342,035.11, 513,053.88 and 105,376.60 is: 158,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,035.11 : 513,053.88 = 105,376.60 : x
  2. Step 2: Convert to fraction form
    342,035.11/513,053.88 = 105,376.60/x
  3. Step 3: Cross multiply
    342,035.11x = 513,053.88 × 105,376.60
  4. Step 4: Simplify right side
    342,035.11x = 54,063,873,491.21
  5. Step 5: Solve for x
    x = 54,063,873,491.21/342,035.11
  6. Step 6: Final answer
    x = 158,065.27

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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.