Home / 394,200.12-543,996.78-224,434.32

Finding the Fourth Proportional to 394,200.12, 543,996.78 and 224,434.32

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Solution

The fourth proportional to 394,200.12, 543,996.78 and 224,434.32 is: 309,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,200.12 : 543,996.78 = 224,434.32 : x
  2. Step 2: Convert to fraction form
    394,200.12/543,996.78 = 224,434.32/x
  3. Step 3: Cross multiply
    394,200.12x = 543,996.78 × 224,434.32
  4. Step 4: Simplify right side
    394,200.12x = 122,091,547,401.49
  5. Step 5: Solve for x
    x = 122,091,547,401.49/394,200.12
  6. Step 6: Final answer
    x = 309,719.71

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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.