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Finding the Fourth Proportional to 218,130.80, 301,005.58 and 122,652.32

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Solution

The fourth proportional to 218,130.80, 301,005.58 and 122,652.32 is: 169,251.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,130.80 : 301,005.58 = 122,652.32 : x
  2. Step 2: Convert to fraction form
    218,130.80/301,005.58 = 122,652.32/x
  3. Step 3: Cross multiply
    218,130.80x = 301,005.58 × 122,652.32
  4. Step 4: Simplify right side
    218,130.80x = 36,919,032,719.95
  5. Step 5: Solve for x
    x = 36,919,032,719.95/218,130.80
  6. Step 6: Final answer
    x = 169,251.81

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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.