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Finding the Fourth Proportional to 145,241.20, 217,894.20 and 56,486.80

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Solution

The fourth proportional to 145,241.20, 217,894.20 and 56,486.80 is: 84,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,241.20 : 217,894.20 = 56,486.80 : x
  2. Step 2: Convert to fraction form
    145,241.20/217,894.20 = 56,486.80/x
  3. Step 3: Cross multiply
    145,241.20x = 217,894.20 × 56,486.80
  4. Step 4: Simplify right side
    145,241.20x = 12,308,146,096.56
  5. Step 5: Solve for x
    x = 12,308,146,096.56/145,241.20
  6. Step 6: Final answer
    x = 84,742.80

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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.