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Finding the Fourth Proportional to 388,727.71, 583,174.59 and 136,016.45

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Solution

The fourth proportional to 388,727.71, 583,174.59 and 136,016.45 is: 204,053.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,727.71 : 583,174.59 = 136,016.45 : x
  2. Step 2: Convert to fraction form
    388,727.71/583,174.59 = 136,016.45/x
  3. Step 3: Cross multiply
    388,727.71x = 583,174.59 × 136,016.45
  4. Step 4: Simplify right side
    388,727.71x = 79,321,336,222.98
  5. Step 5: Solve for x
    x = 79,321,336,222.98/388,727.71
  6. Step 6: Final answer
    x = 204,053.72

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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.