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Finding the Fourth Proportional to 219,997.02, 330,053.85 and 79,776.30

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Solution

The fourth proportional to 219,997.02, 330,053.85 and 79,776.30 is: 119,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,997.02 : 330,053.85 = 79,776.30 : x
  2. Step 2: Convert to fraction form
    219,997.02/330,053.85 = 79,776.30/x
  3. Step 3: Cross multiply
    219,997.02x = 330,053.85 × 79,776.30
  4. Step 4: Simplify right side
    219,997.02x = 26,330,474,953.76
  5. Step 5: Solve for x
    x = 26,330,474,953.76/219,997.02
  6. Step 6: Final answer
    x = 119,685.60

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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.