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Finding the Fourth Proportional to 216,771.34, 299,156.08 and 121,272.34

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Solution

The fourth proportional to 216,771.34, 299,156.08 and 121,272.34 is: 167,362.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,771.34 : 299,156.08 = 121,272.34 : x
  2. Step 2: Convert to fraction form
    216,771.34/299,156.08 = 121,272.34/x
  3. Step 3: Cross multiply
    216,771.34x = 299,156.08 × 121,272.34
  4. Step 4: Simplify right side
    216,771.34x = 36,279,357,846.83
  5. Step 5: Solve for x
    x = 36,279,357,846.83/216,771.34
  6. Step 6: Final answer
    x = 167,362.34

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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.