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Finding the Fourth Proportional to 218,386.86, 301,373.74 and 122,893.64

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Solution

The fourth proportional to 218,386.86, 301,373.74 and 122,893.64 is: 169,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,386.86 : 301,373.74 = 122,893.64 : x
  2. Step 2: Convert to fraction form
    218,386.86/301,373.74 = 122,893.64/x
  3. Step 3: Cross multiply
    218,386.86x = 301,373.74 × 122,893.64
  4. Step 4: Simplify right side
    218,386.86x = 37,036,915,909.01
  5. Step 5: Solve for x
    x = 37,036,915,909.01/218,386.86
  6. Step 6: Final answer
    x = 169,593.15

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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.