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Finding the Fourth Proportional to 215,368, 323,064.96 and 67,624

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Solution

The fourth proportional to 215,368, 323,064.96 and 67,624 is: 101,440.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,368 : 323,064.96 = 67,624 : x
  2. Step 2: Convert to fraction form
    215,368/323,064.96 = 67,624/x
  3. Step 3: Cross multiply
    215,368x = 323,064.96 × 67,624
  4. Step 4: Simplify right side
    215,368x = 21,846,944,855.04
  5. Step 5: Solve for x
    x = 21,846,944,855.04/215,368
  6. Step 6: Final answer
    x = 101,440.07

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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.