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Finding the Fourth Proportional to 218,493.10, 301,549.22 and 123,018.40

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Solution

The fourth proportional to 218,493.10, 301,549.22 and 123,018.40 is: 169,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,493.10 : 301,549.22 = 123,018.40 : x
  2. Step 2: Convert to fraction form
    218,493.10/301,549.22 = 123,018.40/x
  3. Step 3: Cross multiply
    218,493.10x = 301,549.22 × 123,018.40
  4. Step 4: Simplify right side
    218,493.10x = 37,096,102,327.49
  5. Step 5: Solve for x
    x = 37,096,102,327.49/218,493.10
  6. Step 6: Final answer
    x = 169,781.57

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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.