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Finding the Fourth Proportional to 345,379.74, 518,044.32 and 108,790.08

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Solution

The fourth proportional to 345,379.74, 518,044.32 and 108,790.08 is: 163,177.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,379.74 : 518,044.32 = 108,790.08 : x
  2. Step 2: Convert to fraction form
    345,379.74/518,044.32 = 108,790.08/x
  3. Step 3: Cross multiply
    345,379.74x = 518,044.32 × 108,790.08
  4. Step 4: Simplify right side
    345,379.74x = 56,358,083,016.35
  5. Step 5: Solve for x
    x = 56,358,083,016.35/345,379.74
  6. Step 6: Final answer
    x = 163,177.15

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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.