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Finding the Fourth Proportional to 218,919.60, 302,108.40 and 118,317.60

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Solution

The fourth proportional to 218,919.60, 302,108.40 and 118,317.60 is: 163,277.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,919.60 : 302,108.40 = 118,317.60 : x
  2. Step 2: Convert to fraction form
    218,919.60/302,108.40 = 118,317.60/x
  3. Step 3: Cross multiply
    218,919.60x = 302,108.40 × 118,317.60
  4. Step 4: Simplify right side
    218,919.60x = 35,744,740,827.84
  5. Step 5: Solve for x
    x = 35,744,740,827.84/218,919.60
  6. Step 6: Final answer
    x = 163,277.94

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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.