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Finding the Fourth Proportional to 224,192.61, 309,323.21 and 128,664.45

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Solution

The fourth proportional to 224,192.61, 309,323.21 and 128,664.45 is: 177,521.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,192.61 : 309,323.21 = 128,664.45 : x
  2. Step 2: Convert to fraction form
    224,192.61/309,323.21 = 128,664.45/x
  3. Step 3: Cross multiply
    224,192.61x = 309,323.21 × 128,664.45
  4. Step 4: Simplify right side
    224,192.61x = 39,798,900,043.56
  5. Step 5: Solve for x
    x = 39,798,900,043.56/224,192.61
  6. Step 6: Final answer
    x = 177,521.02

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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.