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Finding the Fourth Proportional to 374,685.31, 517,069.80 and 204,915.79

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Solution

The fourth proportional to 374,685.31, 517,069.80 and 204,915.79 is: 282,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,685.31 : 517,069.80 = 204,915.79 : x
  2. Step 2: Convert to fraction form
    374,685.31/517,069.80 = 204,915.79/x
  3. Step 3: Cross multiply
    374,685.31x = 517,069.80 × 204,915.79
  4. Step 4: Simplify right side
    374,685.31x = 105,955,763,966.79
  5. Step 5: Solve for x
    x = 105,955,763,966.79/374,685.31
  6. Step 6: Final answer
    x = 282,786.01

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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.