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Finding the Fourth Proportional to 216,751.75, 299,113.71 and 121,258.22

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Solution

The fourth proportional to 216,751.75, 299,113.71 and 121,258.22 is: 167,334.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,751.75 : 299,113.71 = 121,258.22 : x
  2. Step 2: Convert to fraction form
    216,751.75/299,113.71 = 121,258.22/x
  3. Step 3: Cross multiply
    216,751.75x = 299,113.71 × 121,258.22
  4. Step 4: Simplify right side
    216,751.75x = 36,269,994,783.99
  5. Step 5: Solve for x
    x = 36,269,994,783.99/216,751.75
  6. Step 6: Final answer
    x = 167,334.27

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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.