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Finding the Fourth Proportional to 370,348.28, 555,407.82 and 133,661

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Solution

The fourth proportional to 370,348.28, 555,407.82 and 133,661 is: 200,450.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,348.28 : 555,407.82 = 133,661 : x
  2. Step 2: Convert to fraction form
    370,348.28/555,407.82 = 133,661/x
  3. Step 3: Cross multiply
    370,348.28x = 555,407.82 × 133,661
  4. Step 4: Simplify right side
    370,348.28x = 74,236,364,629.02
  5. Step 5: Solve for x
    x = 74,236,364,629.02/370,348.28
  6. Step 6: Final answer
    x = 200,450.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.