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Finding the Fourth Proportional to 278,740.79, 416,004.76 and 251,836.64

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Solution

The fourth proportional to 278,740.79, 416,004.76 and 251,836.64 is: 375,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,740.79 : 416,004.76 = 251,836.64 : x
  2. Step 2: Convert to fraction form
    278,740.79/416,004.76 = 251,836.64/x
  3. Step 3: Cross multiply
    278,740.79x = 416,004.76 × 251,836.64
  4. Step 4: Simplify right side
    278,740.79x = 104,765,240,982.41
  5. Step 5: Solve for x
    x = 104,765,240,982.41/278,740.79
  6. Step 6: Final answer
    x = 375,851.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.