Home / 278,112.56-417,201.20-100,703.12

Finding the Fourth Proportional to 278,112.56, 417,201.20 and 100,703.12

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Solution

The fourth proportional to 278,112.56, 417,201.20 and 100,703.12 is: 151,066.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,112.56 : 417,201.20 = 100,703.12 : x
  2. Step 2: Convert to fraction form
    278,112.56/417,201.20 = 100,703.12/x
  3. Step 3: Cross multiply
    278,112.56x = 417,201.20 × 100,703.12
  4. Step 4: Simplify right side
    278,112.56x = 42,013,462,507.74
  5. Step 5: Solve for x
    x = 42,013,462,507.74/278,112.56
  6. Step 6: Final answer
    x = 151,066.40

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1.5x scale

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.