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Finding the Fourth Proportional to 343,882.80, 515,386.80 and 306,266.40

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Solution

The fourth proportional to 343,882.80, 515,386.80 and 306,266.40 is: 459,010.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,882.80 : 515,386.80 = 306,266.40 : x
  2. Step 2: Convert to fraction form
    343,882.80/515,386.80 = 306,266.40/x
  3. Step 3: Cross multiply
    343,882.80x = 515,386.80 × 306,266.40
  4. Step 4: Simplify right side
    343,882.80x = 157,845,659,843.52
  5. Step 5: Solve for x
    x = 157,845,659,843.52/343,882.80
  6. Step 6: Final answer
    x = 459,010.05

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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.