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Finding the Fourth Proportional to 343,537.20, 515,309.40 and 94,219.20

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Solution

The fourth proportional to 343,537.20, 515,309.40 and 94,219.20 is: 141,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,537.20 : 515,309.40 = 94,219.20 : x
  2. Step 2: Convert to fraction form
    343,537.20/515,309.40 = 94,219.20/x
  3. Step 3: Cross multiply
    343,537.20x = 515,309.40 × 94,219.20
  4. Step 4: Simplify right side
    343,537.20x = 48,552,039,420.48
  5. Step 5: Solve for x
    x = 48,552,039,420.48/343,537.20
  6. Step 6: Final answer
    x = 141,329.79

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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.