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Finding the Fourth Proportional to 206,585.70, 310,060.80 and 122,240.40

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Solution

The fourth proportional to 206,585.70, 310,060.80 and 122,240.40 is: 183,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,585.70 : 310,060.80 = 122,240.40 : x
  2. Step 2: Convert to fraction form
    206,585.70/310,060.80 = 122,240.40/x
  3. Step 3: Cross multiply
    206,585.70x = 310,060.80 × 122,240.40
  4. Step 4: Simplify right side
    206,585.70x = 37,901,956,216.32
  5. Step 5: Solve for x
    x = 37,901,956,216.32/206,585.70
  6. Step 6: Final answer
    x = 183,468.44

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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.