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Finding the Fourth Proportional to 343,738.08, 515,419.71 and 119,079.72

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Solution

The fourth proportional to 343,738.08, 515,419.71 and 119,079.72 is: 178,554.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,738.08 : 515,419.71 = 119,079.72 : x
  2. Step 2: Convert to fraction form
    343,738.08/515,419.71 = 119,079.72/x
  3. Step 3: Cross multiply
    343,738.08x = 515,419.71 × 119,079.72
  4. Step 4: Simplify right side
    343,738.08x = 61,376,034,302.73
  5. Step 5: Solve for x
    x = 61,376,034,302.73/343,738.08
  6. Step 6: Final answer
    x = 178,554.66

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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.