Home / 287,728.20-431,009.10-162,923.40

Finding the Fourth Proportional to 287,728.20, 431,009.10 and 162,923.40

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Solution

The fourth proportional to 287,728.20, 431,009.10 and 162,923.40 is: 244,054.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,728.20 : 431,009.10 = 162,923.40 : x
  2. Step 2: Convert to fraction form
    287,728.20/431,009.10 = 162,923.40/x
  3. Step 3: Cross multiply
    287,728.20x = 431,009.10 × 162,923.40
  4. Step 4: Simplify right side
    287,728.20x = 70,221,468,002.94
  5. Step 5: Solve for x
    x = 70,221,468,002.94/287,728.20
  6. Step 6: Final answer
    x = 244,054.87

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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.