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Finding the Fourth Proportional to 371,279.64, 512,278.08 and 210,134.70

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Solution

The fourth proportional to 371,279.64, 512,278.08 and 210,134.70 is: 289,936.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,279.64 : 512,278.08 = 210,134.70 : x
  2. Step 2: Convert to fraction form
    371,279.64/512,278.08 = 210,134.70/x
  3. Step 3: Cross multiply
    371,279.64x = 512,278.08 × 210,134.70
  4. Step 4: Simplify right side
    371,279.64x = 107,647,400,657.38
  5. Step 5: Solve for x
    x = 107,647,400,657.38/371,279.64
  6. Step 6: Final answer
    x = 289,936.18

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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.