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Finding the Fourth Proportional to 216,887.79, 299,311.48 and 121,392.03

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Solution

The fourth proportional to 216,887.79, 299,311.48 and 121,392.03 is: 167,524.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,887.79 : 299,311.48 = 121,392.03 : x
  2. Step 2: Convert to fraction form
    216,887.79/299,311.48 = 121,392.03/x
  3. Step 3: Cross multiply
    216,887.79x = 299,311.48 × 121,392.03
  4. Step 4: Simplify right side
    216,887.79x = 36,334,028,159.50
  5. Step 5: Solve for x
    x = 36,334,028,159.50/216,887.79
  6. Step 6: Final answer
    x = 167,524.54

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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.