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Finding the Fourth Proportional to 391,210.84, 540,201.90 and 248,224.60

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Solution

The fourth proportional to 391,210.84, 540,201.90 and 248,224.60 is: 342,759.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,210.84 : 540,201.90 = 248,224.60 : x
  2. Step 2: Convert to fraction form
    391,210.84/540,201.90 = 248,224.60/x
  3. Step 3: Cross multiply
    391,210.84x = 540,201.90 × 248,224.60
  4. Step 4: Simplify right side
    391,210.84x = 134,091,400,546.74
  5. Step 5: Solve for x
    x = 134,091,400,546.74/391,210.84
  6. Step 6: Final answer
    x = 342,759.93

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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.