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Finding the Fourth Proportional to 216,763.34, 299,145.04 and 121,264.34

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Solution

The fourth proportional to 216,763.34, 299,145.04 and 121,264.34 is: 167,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,763.34 : 299,145.04 = 121,264.34 : x
  2. Step 2: Convert to fraction form
    216,763.34/299,145.04 = 121,264.34/x
  3. Step 3: Cross multiply
    216,763.34x = 299,145.04 × 121,264.34
  4. Step 4: Simplify right side
    216,763.34x = 36,275,625,839.87
  5. Step 5: Solve for x
    x = 36,275,625,839.87/216,763.34
  6. Step 6: Final answer
    x = 167,351.30

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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.