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Finding the Fourth Proportional to 216,763.59, 299,145.38 and 121,264.59

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Solution

The fourth proportional to 216,763.59, 299,145.38 and 121,264.59 is: 167,351.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,763.59 : 299,145.38 = 121,264.59 : x
  2. Step 2: Convert to fraction form
    216,763.59/299,145.38 = 121,264.59/x
  3. Step 3: Cross multiply
    216,763.59x = 299,145.38 × 121,264.59
  4. Step 4: Simplify right side
    216,763.59x = 36,275,741,249.77
  5. Step 5: Solve for x
    x = 36,275,741,249.77/216,763.59
  6. Step 6: Final answer
    x = 167,351.64

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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.