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Finding the Fourth Proportional to 243,866.27, 336,548.51 and 136,429.89

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Solution

The fourth proportional to 243,866.27, 336,548.51 and 136,429.89 is: 188,280.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,866.27 : 336,548.51 = 136,429.89 : x
  2. Step 2: Convert to fraction form
    243,866.27/336,548.51 = 136,429.89/x
  3. Step 3: Cross multiply
    243,866.27x = 336,548.51 × 136,429.89
  4. Step 4: Simplify right side
    243,866.27x = 45,915,275,516.81
  5. Step 5: Solve for x
    x = 45,915,275,516.81/243,866.27
  6. Step 6: Final answer
    x = 188,280.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.