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Finding the Fourth Proportional to 343,639.98, 515,252.88 and 154,066.03

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Solution

The fourth proportional to 343,639.98, 515,252.88 and 154,066.03 is: 231,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,639.98 : 515,252.88 = 154,066.03 : x
  2. Step 2: Convert to fraction form
    343,639.98/515,252.88 = 154,066.03/x
  3. Step 3: Cross multiply
    343,639.98x = 515,252.88 × 154,066.03
  4. Step 4: Simplify right side
    343,639.98x = 79,382,964,379.53
  5. Step 5: Solve for x
    x = 79,382,964,379.53/343,639.98
  6. Step 6: Final answer
    x = 231,006.20

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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.