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Finding the Fourth Proportional to 218,493.15, 301,549.28 and 123,018.45

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Solution

The fourth proportional to 218,493.15, 301,549.28 and 123,018.45 is: 169,781.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,493.15 : 301,549.28 = 123,018.45 : x
  2. Step 2: Convert to fraction form
    218,493.15/301,549.28 = 123,018.45/x
  3. Step 3: Cross multiply
    218,493.15x = 301,549.28 × 123,018.45
  4. Step 4: Simplify right side
    218,493.15x = 37,096,123,970.29
  5. Step 5: Solve for x
    x = 37,096,123,970.29/218,493.15
  6. Step 6: Final answer
    x = 169,781.64

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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.