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Finding the Fourth Proportional to 268,580.40, 370,611.90 and 155,382

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Solution

The fourth proportional to 268,580.40, 370,611.90 and 155,382 is: 214,410.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,580.40 : 370,611.90 = 155,382 : x
  2. Step 2: Convert to fraction form
    268,580.40/370,611.90 = 155,382/x
  3. Step 3: Cross multiply
    268,580.40x = 370,611.90 × 155,382
  4. Step 4: Simplify right side
    268,580.40x = 57,586,418,245.80
  5. Step 5: Solve for x
    x = 57,586,418,245.80/268,580.40
  6. Step 6: Final answer
    x = 214,410.35

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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.