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Finding the Fourth Proportional to 343,681.22, 515,314.74 and 154,107.27

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Solution

The fourth proportional to 343,681.22, 515,314.74 and 154,107.27 is: 231,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,681.22 : 515,314.74 = 154,107.27 : x
  2. Step 2: Convert to fraction form
    343,681.22/515,314.74 = 154,107.27/x
  3. Step 3: Cross multiply
    343,681.22x = 515,314.74 × 154,107.27
  4. Step 4: Simplify right side
    343,681.22x = 79,413,747,772.16
  5. Step 5: Solve for x
    x = 79,413,747,772.16/343,681.22
  6. Step 6: Final answer
    x = 231,068.05

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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.