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Finding the Fourth Proportional to 282,963.26, 390,481.07 and 155,638.82

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Solution

The fourth proportional to 282,963.26, 390,481.07 and 155,638.82 is: 214,777.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,963.26 : 390,481.07 = 155,638.82 : x
  2. Step 2: Convert to fraction form
    282,963.26/390,481.07 = 155,638.82/x
  3. Step 3: Cross multiply
    282,963.26x = 390,481.07 × 155,638.82
  4. Step 4: Simplify right side
    282,963.26x = 60,774,010,236.54
  5. Step 5: Solve for x
    x = 60,774,010,236.54/282,963.26
  6. Step 6: Final answer
    x = 214,777.04

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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.