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Finding the Fourth Proportional to 282,454.44, 389,785.88 and 153,391.90

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Solution

The fourth proportional to 282,454.44, 389,785.88 and 153,391.90 is: 211,680.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,454.44 : 389,785.88 = 153,391.90 : x
  2. Step 2: Convert to fraction form
    282,454.44/389,785.88 = 153,391.90/x
  3. Step 3: Cross multiply
    282,454.44x = 389,785.88 × 153,391.90
  4. Step 4: Simplify right side
    282,454.44x = 59,789,998,040.32
  5. Step 5: Solve for x
    x = 59,789,998,040.32/282,454.44
  6. Step 6: Final answer
    x = 211,680.15

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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.