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Finding the Fourth Proportional to 371,278.67, 512,350.85 and 201,509.15

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Solution

The fourth proportional to 371,278.67, 512,350.85 and 201,509.15 is: 278,075.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,278.67 : 512,350.85 = 201,509.15 : x
  2. Step 2: Convert to fraction form
    371,278.67/512,350.85 = 201,509.15/x
  3. Step 3: Cross multiply
    371,278.67x = 512,350.85 × 201,509.15
  4. Step 4: Simplify right side
    371,278.67x = 103,243,382,227.30
  5. Step 5: Solve for x
    x = 103,243,382,227.30/371,278.67
  6. Step 6: Final answer
    x = 278,075.18

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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.