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Finding the Fourth Proportional to 371,257.48, 512,335.53 and 201,491.61

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Solution

The fourth proportional to 371,257.48, 512,335.53 and 201,491.61 is: 278,058.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,257.48 : 512,335.53 = 201,491.61 : x
  2. Step 2: Convert to fraction form
    371,257.48/512,335.53 = 201,491.61/x
  3. Step 3: Cross multiply
    371,257.48x = 512,335.53 × 201,491.61
  4. Step 4: Simplify right side
    371,257.48x = 103,231,308,878.65
  5. Step 5: Solve for x
    x = 103,231,308,878.65/371,257.48
  6. Step 6: Final answer
    x = 278,058.53

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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.