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Finding the Fourth Proportional to 343,486.40, 515,083.80 and 166,047.80

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Solution

The fourth proportional to 343,486.40, 515,083.80 and 166,047.80 is: 249,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,486.40 : 515,083.80 = 166,047.80 : x
  2. Step 2: Convert to fraction form
    343,486.40/515,083.80 = 166,047.80/x
  3. Step 3: Cross multiply
    343,486.40x = 515,083.80 × 166,047.80
  4. Step 4: Simplify right side
    343,486.40x = 85,528,531,805.64
  5. Step 5: Solve for x
    x = 85,528,531,805.64/343,486.40
  6. Step 6: Final answer
    x = 249,001.22

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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.