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Finding the Fourth Proportional to 388,717.65, 536,247 and 227,472.91

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Solution

The fourth proportional to 388,717.65, 536,247 and 227,472.91 is: 313,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,717.65 : 536,247 = 227,472.91 : x
  2. Step 2: Convert to fraction form
    388,717.65/536,247 = 227,472.91/x
  3. Step 3: Cross multiply
    388,717.65x = 536,247 × 227,472.91
  4. Step 4: Simplify right side
    388,717.65x = 121,981,664,228.15
  5. Step 5: Solve for x
    x = 121,981,664,228.15/388,717.65
  6. Step 6: Final answer
    x = 313,805.31

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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.