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Finding the Fourth Proportional to 145,215.60, 217,823.40 and 133,843.20

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Solution

The fourth proportional to 145,215.60, 217,823.40 and 133,843.20 is: 200,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215.60 : 217,823.40 = 133,843.20 : x
  2. Step 2: Convert to fraction form
    145,215.60/217,823.40 = 133,843.20/x
  3. Step 3: Cross multiply
    145,215.60x = 217,823.40 × 133,843.20
  4. Step 4: Simplify right side
    145,215.60x = 29,154,180,890.88
  5. Step 5: Solve for x
    x = 29,154,180,890.88/145,215.60
  6. Step 6: Final answer
    x = 200,764.80

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1.5x scale

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.