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Finding the Fourth Proportional to 218,073.60, 300,973.44 and 122,588.16

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Solution

The fourth proportional to 218,073.60, 300,973.44 and 122,588.16 is: 169,189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,073.60 : 300,973.44 = 122,588.16 : x
  2. Step 2: Convert to fraction form
    218,073.60/300,973.44 = 122,588.16/x
  3. Step 3: Cross multiply
    218,073.60x = 300,973.44 × 122,588.16
  4. Step 4: Simplify right side
    218,073.60x = 36,895,780,218.47
  5. Step 5: Solve for x
    x = 36,895,780,218.47/218,073.60
  6. Step 6: Final answer
    x = 169,189.58

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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.