Home / 263,005.83-394,787.75-213,681.47

Finding the Fourth Proportional to 263,005.83, 394,787.75 and 213,681.47

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Solution

The fourth proportional to 263,005.83, 394,787.75 and 213,681.47 is: 320,748.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,005.83 : 394,787.75 = 213,681.47 : x
  2. Step 2: Convert to fraction form
    263,005.83/394,787.75 = 213,681.47/x
  3. Step 3: Cross multiply
    263,005.83x = 394,787.75 × 213,681.47
  4. Step 4: Simplify right side
    263,005.83x = 84,358,823,715.65
  5. Step 5: Solve for x
    x = 84,358,823,715.65/263,005.83
  6. Step 6: Final answer
    x = 320,748.87

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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.