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Finding the Fourth Proportional to 206,887.10, 310,330.65 and 192,890.30

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Solution

The fourth proportional to 206,887.10, 310,330.65 and 192,890.30 is: 289,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,887.10 : 310,330.65 = 192,890.30 : x
  2. Step 2: Convert to fraction form
    206,887.10/310,330.65 = 192,890.30/x
  3. Step 3: Cross multiply
    206,887.10x = 310,330.65 × 192,890.30
  4. Step 4: Simplify right side
    206,887.10x = 59,859,772,177.70
  5. Step 5: Solve for x
    x = 59,859,772,177.70/206,887.10
  6. Step 6: Final answer
    x = 289,335.45

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1.5x scale

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.