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Finding the Fourth Proportional to 215,303, 323,006.70 and 67,559

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Solution

The fourth proportional to 215,303, 323,006.70 and 67,559 is: 101,354.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,303 : 323,006.70 = 67,559 : x
  2. Step 2: Convert to fraction form
    215,303/323,006.70 = 67,559/x
  3. Step 3: Cross multiply
    215,303x = 323,006.70 × 67,559
  4. Step 4: Simplify right side
    215,303x = 21,822,009,645.30
  5. Step 5: Solve for x
    x = 21,822,009,645.30/215,303
  6. Step 6: Final answer
    x = 101,354.88

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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.