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Finding the Fourth Proportional to 291,270.35, 401,871.89 and 187,860.80

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Solution

The fourth proportional to 291,270.35, 401,871.89 and 187,860.80 is: 259,195.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,270.35 : 401,871.89 = 187,860.80 : x
  2. Step 2: Convert to fraction form
    291,270.35/401,871.89 = 187,860.80/x
  3. Step 3: Cross multiply
    291,270.35x = 401,871.89 × 187,860.80
  4. Step 4: Simplify right side
    291,270.35x = 75,495,973,813.61
  5. Step 5: Solve for x
    x = 75,495,973,813.61/291,270.35
  6. Step 6: Final answer
    x = 259,195.53

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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.