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Finding the Fourth Proportional to 218,565.61, 301,649.27 and 123,090.97

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Solution

The fourth proportional to 218,565.61, 301,649.27 and 123,090.97 is: 169,881.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,565.61 : 301,649.27 = 123,090.97 : x
  2. Step 2: Convert to fraction form
    218,565.61/301,649.27 = 123,090.97/x
  3. Step 3: Cross multiply
    218,565.61x = 301,649.27 × 123,090.97
  4. Step 4: Simplify right side
    218,565.61x = 37,130,300,628.64
  5. Step 5: Solve for x
    x = 37,130,300,628.64/218,565.61
  6. Step 6: Final answer
    x = 169,881.71

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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.