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Finding the Fourth Proportional to 391,213.84, 540,206.04 and 248,227.60

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Solution

The fourth proportional to 391,213.84, 540,206.04 and 248,227.60 is: 342,764.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,213.84 : 540,206.04 = 248,227.60 : x
  2. Step 2: Convert to fraction form
    391,213.84/540,206.04 = 248,227.60/x
  3. Step 3: Cross multiply
    391,213.84x = 540,206.04 × 248,227.60
  4. Step 4: Simplify right side
    391,213.84x = 134,094,048,814.70
  5. Step 5: Solve for x
    x = 134,094,048,814.70/391,213.84
  6. Step 6: Final answer
    x = 342,764.07

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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.