Home / 278,055.11-417,115.08-100,645.67

Finding the Fourth Proportional to 278,055.11, 417,115.08 and 100,645.67

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Solution

The fourth proportional to 278,055.11, 417,115.08 and 100,645.67 is: 150,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,055.11 : 417,115.08 = 100,645.67 : x
  2. Step 2: Convert to fraction form
    278,055.11/417,115.08 = 100,645.67/x
  3. Step 3: Cross multiply
    278,055.11x = 417,115.08 × 100,645.67
  4. Step 4: Simplify right side
    278,055.11x = 41,980,824,608.13
  5. Step 5: Solve for x
    x = 41,980,824,608.13/278,055.11
  6. Step 6: Final answer
    x = 150,980.23

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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.