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Finding the Fourth Proportional to 282,395.60, 389,708.63 and 155,073.86

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Solution

The fourth proportional to 282,395.60, 389,708.63 and 155,073.86 is: 214,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,395.60 : 389,708.63 = 155,073.86 : x
  2. Step 2: Convert to fraction form
    282,395.60/389,708.63 = 155,073.86/x
  3. Step 3: Cross multiply
    282,395.60x = 389,708.63 × 155,073.86
  4. Step 4: Simplify right side
    282,395.60x = 60,433,621,720.72
  5. Step 5: Solve for x
    x = 60,433,621,720.72/282,395.60
  6. Step 6: Final answer
    x = 214,003.41

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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.