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Finding the Fourth Proportional to 206,552.70, 310,011.30 and 122,207.40

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Solution

The fourth proportional to 206,552.70, 310,011.30 and 122,207.40 is: 183,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,552.70 : 310,011.30 = 122,207.40 : x
  2. Step 2: Convert to fraction form
    206,552.70/310,011.30 = 122,207.40/x
  3. Step 3: Cross multiply
    206,552.70x = 310,011.30 × 122,207.40
  4. Step 4: Simplify right side
    206,552.70x = 37,885,674,943.62
  5. Step 5: Solve for x
    x = 37,885,674,943.62/206,552.70
  6. Step 6: Final answer
    x = 183,418.93

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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.