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Finding the Fourth Proportional to 218,450.34, 301,442.28 and 121,646.90

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Solution

The fourth proportional to 218,450.34, 301,442.28 and 121,646.90 is: 167,862.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,450.34 : 301,442.28 = 121,646.90 : x
  2. Step 2: Convert to fraction form
    218,450.34/301,442.28 = 121,646.90/x
  3. Step 3: Cross multiply
    218,450.34x = 301,442.28 × 121,646.90
  4. Step 4: Simplify right side
    218,450.34x = 36,669,517,383.72
  5. Step 5: Solve for x
    x = 36,669,517,383.72/218,450.34
  6. Step 6: Final answer
    x = 167,862.03

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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.