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Finding the Fourth Proportional to 343,335.20, 515,002.80 and 343,335.20

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Solution

The fourth proportional to 343,335.20, 515,002.80 and 343,335.20 is: 515,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,335.20 : 515,002.80 = 343,335.20 : x
  2. Step 2: Convert to fraction form
    343,335.20/515,002.80 = 343,335.20/x
  3. Step 3: Cross multiply
    343,335.20x = 515,002.80 × 343,335.20
  4. Step 4: Simplify right side
    343,335.20x = 176,818,589,338.56
  5. Step 5: Solve for x
    x = 176,818,589,338.56/343,335.20
  6. Step 6: Final answer
    x = 515,002.80

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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.