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Finding the Fourth Proportional to 218,278.80, 301,237.92 and 122,791.68

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Solution

The fourth proportional to 218,278.80, 301,237.92 and 122,791.68 is: 169,459.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,278.80 : 301,237.92 = 122,791.68 : x
  2. Step 2: Convert to fraction form
    218,278.80/301,237.92 = 122,791.68/x
  3. Step 3: Cross multiply
    218,278.80x = 301,237.92 × 122,791.68
  4. Step 4: Simplify right side
    218,278.80x = 36,989,510,276.51
  5. Step 5: Solve for x
    x = 36,989,510,276.51/218,278.80
  6. Step 6: Final answer
    x = 169,459.93

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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.