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Finding the Fourth Proportional to 282,808.26, 390,270.15 and 155,481.12

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Solution

The fourth proportional to 282,808.26, 390,270.15 and 155,481.12 is: 214,561.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,808.26 : 390,270.15 = 155,481.12 : x
  2. Step 2: Convert to fraction form
    282,808.26/390,270.15 = 155,481.12/x
  3. Step 3: Cross multiply
    282,808.26x = 390,270.15 × 155,481.12
  4. Step 4: Simplify right side
    282,808.26x = 60,679,640,024.57
  5. Step 5: Solve for x
    x = 60,679,640,024.57/282,808.26
  6. Step 6: Final answer
    x = 214,561.06

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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.