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Finding the Fourth Proportional to 217,267.80, 299,268.72 and 153,494.88

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Solution

The fourth proportional to 217,267.80, 299,268.72 and 153,494.88 is: 211,426.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,267.80 : 299,268.72 = 153,494.88 : x
  2. Step 2: Convert to fraction form
    217,267.80/299,268.72 = 153,494.88/x
  3. Step 3: Cross multiply
    217,267.80x = 299,268.72 × 153,494.88
  4. Step 4: Simplify right side
    217,267.80x = 45,936,216,264.15
  5. Step 5: Solve for x
    x = 45,936,216,264.15/217,267.80
  6. Step 6: Final answer
    x = 211,426.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.