Home / 278,100.28-417,274.44-128,260

Finding the Fourth Proportional to 278,100.28, 417,274.44 and 128,260

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Solution

The fourth proportional to 278,100.28, 417,274.44 and 128,260 is: 192,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,100.28 : 417,274.44 = 128,260 : x
  2. Step 2: Convert to fraction form
    278,100.28/417,274.44 = 128,260/x
  3. Step 3: Cross multiply
    278,100.28x = 417,274.44 × 128,260
  4. Step 4: Simplify right side
    278,100.28x = 53,519,619,674.40
  5. Step 5: Solve for x
    x = 53,519,619,674.40/278,100.28
  6. Step 6: Final answer
    x = 192,447.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.