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Finding the Fourth Proportional to 278,891.56, 417,303.78 and 166,632.85

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Solution

The fourth proportional to 278,891.56, 417,303.78 and 166,632.85 is: 249,331.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,891.56 : 417,303.78 = 166,632.85 : x
  2. Step 2: Convert to fraction form
    278,891.56/417,303.78 = 166,632.85/x
  3. Step 3: Cross multiply
    278,891.56x = 417,303.78 × 166,632.85
  4. Step 4: Simplify right side
    278,891.56x = 69,536,518,177.17
  5. Step 5: Solve for x
    x = 69,536,518,177.17/278,891.56
  6. Step 6: Final answer
    x = 249,331.74

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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.