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Finding the Fourth Proportional to 224,343.60, 309,601.08 and 128,869.44

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Solution

The fourth proportional to 224,343.60, 309,601.08 and 128,869.44 is: 177,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,343.60 : 309,601.08 = 128,869.44 : x
  2. Step 2: Convert to fraction form
    224,343.60/309,601.08 = 128,869.44/x
  3. Step 3: Cross multiply
    224,343.60x = 309,601.08 × 128,869.44
  4. Step 4: Simplify right side
    224,343.60x = 39,898,117,803.00
  5. Step 5: Solve for x
    x = 39,898,117,803.00/224,343.60
  6. Step 6: Final answer
    x = 177,843.80

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1.5x scale

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.