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Finding the Fourth Proportional to 343,693.58, 515,473.62 and 172,869.74

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Solution

The fourth proportional to 343,693.58, 515,473.62 and 172,869.74 is: 259,271.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,693.58 : 515,473.62 = 172,869.74 : x
  2. Step 2: Convert to fraction form
    343,693.58/515,473.62 = 172,869.74/x
  3. Step 3: Cross multiply
    343,693.58x = 515,473.62 × 172,869.74
  4. Step 4: Simplify right side
    343,693.58x = 89,109,793,245.59
  5. Step 5: Solve for x
    x = 89,109,793,245.59/343,693.58
  6. Step 6: Final answer
    x = 259,271.04

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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.