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Finding the Fourth Proportional to 381,136.52, 525,964.79 and 209,051.01

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Solution

The fourth proportional to 381,136.52, 525,964.79 and 209,051.01 is: 288,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,136.52 : 525,964.79 = 209,051.01 : x
  2. Step 2: Convert to fraction form
    381,136.52/525,964.79 = 209,051.01/x
  3. Step 3: Cross multiply
    381,136.52x = 525,964.79 × 209,051.01
  4. Step 4: Simplify right side
    381,136.52x = 109,953,471,096.57
  5. Step 5: Solve for x
    x = 109,953,471,096.57/381,136.52
  6. Step 6: Final answer
    x = 288,488.41

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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.