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Finding the Fourth Proportional to 343,609.74, 515,291.11 and 118,909.16

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Solution

The fourth proportional to 343,609.74, 515,291.11 and 118,909.16 is: 178,321.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,609.74 : 515,291.11 = 118,909.16 : x
  2. Step 2: Convert to fraction form
    343,609.74/515,291.11 = 118,909.16/x
  3. Step 3: Cross multiply
    343,609.74x = 515,291.11 × 118,909.16
  4. Step 4: Simplify right side
    343,609.74x = 61,272,833,045.57
  5. Step 5: Solve for x
    x = 61,272,833,045.57/343,609.74
  6. Step 6: Final answer
    x = 178,321.00

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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.