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Finding the Fourth Proportional to 218,216.39, 301,114.14 and 122,721.04

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Solution

The fourth proportional to 218,216.39, 301,114.14 and 122,721.04 is: 169,341.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,216.39 : 301,114.14 = 122,721.04 : x
  2. Step 2: Convert to fraction form
    218,216.39/301,114.14 = 122,721.04/x
  3. Step 3: Cross multiply
    218,216.39x = 301,114.14 × 122,721.04
  4. Step 4: Simplify right side
    218,216.39x = 36,953,038,913.93
  5. Step 5: Solve for x
    x = 36,953,038,913.93/218,216.39
  6. Step 6: Final answer
    x = 169,341.26

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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.