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Finding the Fourth Proportional to 371,346.12, 512,456.22 and 201,578.76

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Solution

The fourth proportional to 371,346.12, 512,456.22 and 201,578.76 is: 278,177.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,346.12 : 512,456.22 = 201,578.76 : x
  2. Step 2: Convert to fraction form
    371,346.12/512,456.22 = 201,578.76/x
  3. Step 3: Cross multiply
    371,346.12x = 512,456.22 × 201,578.76
  4. Step 4: Simplify right side
    371,346.12x = 103,300,289,381.89
  5. Step 5: Solve for x
    x = 103,300,289,381.89/371,346.12
  6. Step 6: Final answer
    x = 278,177.91

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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.