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Finding the Fourth Proportional to 218,370.48, 301,326.84 and 122,910

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Solution

The fourth proportional to 218,370.48, 301,326.84 and 122,910 is: 169,602.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,370.48 : 301,326.84 = 122,910 : x
  2. Step 2: Convert to fraction form
    218,370.48/301,326.84 = 122,910/x
  3. Step 3: Cross multiply
    218,370.48x = 301,326.84 × 122,910
  4. Step 4: Simplify right side
    218,370.48x = 37,036,081,904.40
  5. Step 5: Solve for x
    x = 37,036,081,904.40/218,370.48
  6. Step 6: Final answer
    x = 169,602.05

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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.