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Finding the Fourth Proportional to 343,637.40, 515,456.10 and 325,266.60

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Solution

The fourth proportional to 343,637.40, 515,456.10 and 325,266.60 is: 487,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,637.40 : 515,456.10 = 325,266.60 : x
  2. Step 2: Convert to fraction form
    343,637.40/515,456.10 = 325,266.60/x
  3. Step 3: Cross multiply
    343,637.40x = 515,456.10 × 325,266.60
  4. Step 4: Simplify right side
    343,637.40x = 167,660,653,096.26
  5. Step 5: Solve for x
    x = 167,660,653,096.26/343,637.40
  6. Step 6: Final answer
    x = 487,899.90

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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.