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Finding the Fourth Proportional to 517,491.91, 714,138.73 and 288,044.27

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Solution

The fourth proportional to 517,491.91, 714,138.73 and 288,044.27 is: 397,501.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,491.91 : 714,138.73 = 288,044.27 : x
  2. Step 2: Convert to fraction form
    517,491.91/714,138.73 = 288,044.27/x
  3. Step 3: Cross multiply
    517,491.91x = 714,138.73 × 288,044.27
  4. Step 4: Simplify right side
    517,491.91x = 205,703,572,199.65
  5. Step 5: Solve for x
    x = 205,703,572,199.65/517,491.91
  6. Step 6: Final answer
    x = 397,501.04

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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.