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Finding the Fourth Proportional to 201,222.90, 301,830.66 and 81,276.84

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Solution

The fourth proportional to 201,222.90, 301,830.66 and 81,276.84 is: 121,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,222.90 : 301,830.66 = 81,276.84 : x
  2. Step 2: Convert to fraction form
    201,222.90/301,830.66 = 81,276.84/x
  3. Step 3: Cross multiply
    201,222.90x = 301,830.66 × 81,276.84
  4. Step 4: Simplify right side
    201,222.90x = 24,531,842,259.91
  5. Step 5: Solve for x
    x = 24,531,842,259.91/201,222.90
  6. Step 6: Final answer
    x = 121,913.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.