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Finding the Fourth Proportional to 282,585.78, 389,987.46 and 155,262.96

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Solution

The fourth proportional to 282,585.78, 389,987.46 and 155,262.96 is: 214,273.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,585.78 : 389,987.46 = 155,262.96 : x
  2. Step 2: Convert to fraction form
    282,585.78/389,987.46 = 155,262.96/x
  3. Step 3: Cross multiply
    282,585.78x = 389,987.46 × 155,262.96
  4. Step 4: Simplify right side
    282,585.78x = 60,550,607,402.48
  5. Step 5: Solve for x
    x = 60,550,607,402.48/282,585.78
  6. Step 6: Final answer
    x = 214,273.37

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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.