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Finding the Fourth Proportional to 215,710.11, 297,680.89 and 118,911.89

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Solution

The fourth proportional to 215,710.11, 297,680.89 and 118,911.89 is: 164,098.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,710.11 : 297,680.89 = 118,911.89 : x
  2. Step 2: Convert to fraction form
    215,710.11/297,680.89 = 118,911.89/x
  3. Step 3: Cross multiply
    215,710.11x = 297,680.89 × 118,911.89
  4. Step 4: Simplify right side
    215,710.11x = 35,397,797,693.70
  5. Step 5: Solve for x
    x = 35,397,797,693.70/215,710.11
  6. Step 6: Final answer
    x = 164,098.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.