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Finding the Fourth Proportional to 218,296.89, 301,239.95 and 121,505.81

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Solution

The fourth proportional to 218,296.89, 301,239.95 and 121,505.81 is: 167,672.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,296.89 : 301,239.95 = 121,505.81 : x
  2. Step 2: Convert to fraction form
    218,296.89/301,239.95 = 121,505.81/x
  3. Step 3: Cross multiply
    218,296.89x = 301,239.95 × 121,505.81
  4. Step 4: Simplify right side
    218,296.89x = 36,602,402,015.38
  5. Step 5: Solve for x
    x = 36,602,402,015.38/218,296.89
  6. Step 6: Final answer
    x = 167,672.58

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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.