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Finding the Fourth Proportional to 343,732.40, 515,623.16 and 143,851.52

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Solution

The fourth proportional to 343,732.40, 515,623.16 and 143,851.52 is: 215,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,732.40 : 515,623.16 = 143,851.52 : x
  2. Step 2: Convert to fraction form
    343,732.40/515,623.16 = 143,851.52/x
  3. Step 3: Cross multiply
    343,732.40x = 515,623.16 × 143,851.52
  4. Step 4: Simplify right side
    343,732.40x = 74,173,175,313.20
  5. Step 5: Solve for x
    x = 74,173,175,313.20/343,732.40
  6. Step 6: Final answer
    x = 215,787.56

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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.