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Finding the Fourth Proportional to 218,596.30, 301,666.46 and 121,800.28

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Solution

The fourth proportional to 218,596.30, 301,666.46 and 121,800.28 is: 168,086.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,596.30 : 301,666.46 = 121,800.28 : x
  2. Step 2: Convert to fraction form
    218,596.30/301,666.46 = 121,800.28/x
  3. Step 3: Cross multiply
    218,596.30x = 301,666.46 × 121,800.28
  4. Step 4: Simplify right side
    218,596.30x = 36,743,059,294.61
  5. Step 5: Solve for x
    x = 36,743,059,294.61/218,596.30
  6. Step 6: Final answer
    x = 168,086.37

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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.