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Finding the Fourth Proportional to 313,083.75, 432,056.43 and 169,843.80

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Solution

The fourth proportional to 313,083.75, 432,056.43 and 169,843.80 is: 234,384.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,083.75 : 432,056.43 = 169,843.80 : x
  2. Step 2: Convert to fraction form
    313,083.75/432,056.43 = 169,843.80/x
  3. Step 3: Cross multiply
    313,083.75x = 432,056.43 × 169,843.80
  4. Step 4: Simplify right side
    313,083.75x = 73,382,105,885.63
  5. Step 5: Solve for x
    x = 73,382,105,885.63/313,083.75
  6. Step 6: Final answer
    x = 234,384.91

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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.