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Finding the Fourth Proportional to 371,316.12, 512,416.86 and 201,550.20

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Solution

The fourth proportional to 371,316.12, 512,416.86 and 201,550.20 is: 278,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,316.12 : 512,416.86 = 201,550.20 : x
  2. Step 2: Convert to fraction form
    371,316.12/512,416.86 = 201,550.20/x
  3. Step 3: Cross multiply
    371,316.12x = 512,416.86 × 201,550.20
  4. Step 4: Simplify right side
    371,316.12x = 103,277,720,616.37
  5. Step 5: Solve for x
    x = 103,277,720,616.37/371,316.12
  6. Step 6: Final answer
    x = 278,139.61

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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.