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Finding the Fourth Proportional to 371,397.54, 512,528.40 and 201,631.80

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Solution

The fourth proportional to 371,397.54, 512,528.40 and 201,631.80 is: 278,251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,397.54 : 512,528.40 = 201,631.80 : x
  2. Step 2: Convert to fraction form
    371,397.54/512,528.40 = 201,631.80/x
  3. Step 3: Cross multiply
    371,397.54x = 512,528.40 × 201,631.80
  4. Step 4: Simplify right side
    371,397.54x = 103,342,023,843.12
  5. Step 5: Solve for x
    x = 103,342,023,843.12/371,397.54
  6. Step 6: Final answer
    x = 278,251.77

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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.