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Finding the Fourth Proportional to 215,881.58, 297,910.01 and 120,404.45

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Solution

The fourth proportional to 215,881.58, 297,910.01 and 120,404.45 is: 166,154.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,881.58 : 297,910.01 = 120,404.45 : x
  2. Step 2: Convert to fraction form
    215,881.58/297,910.01 = 120,404.45/x
  3. Step 3: Cross multiply
    215,881.58x = 297,910.01 × 120,404.45
  4. Step 4: Simplify right side
    215,881.58x = 35,869,689,715.01
  5. Step 5: Solve for x
    x = 35,869,689,715.01/215,881.58
  6. Step 6: Final answer
    x = 166,154.47

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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.