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Finding the Fourth Proportional to 343,433.14, 515,174.31 and 90,711.11

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Solution

The fourth proportional to 343,433.14, 515,174.31 and 90,711.11 is: 136,073.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,433.14 : 515,174.31 = 90,711.11 : x
  2. Step 2: Convert to fraction form
    343,433.14/515,174.31 = 90,711.11/x
  3. Step 3: Cross multiply
    343,433.14x = 515,174.31 × 90,711.11
  4. Step 4: Simplify right side
    343,433.14x = 46,732,033,050.03
  5. Step 5: Solve for x
    x = 46,732,033,050.03/343,433.14
  6. Step 6: Final answer
    x = 136,073.16

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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.