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Finding the Fourth Proportional to 282,585.36, 389,967.48 and 155,260.64

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Solution

The fourth proportional to 282,585.36, 389,967.48 and 155,260.64 is: 214,259.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,585.36 : 389,967.48 = 155,260.64 : x
  2. Step 2: Convert to fraction form
    282,585.36/389,967.48 = 155,260.64/x
  3. Step 3: Cross multiply
    282,585.36x = 389,967.48 × 155,260.64
  4. Step 4: Simplify right side
    282,585.36x = 60,546,600,523.99
  5. Step 5: Solve for x
    x = 60,546,600,523.99/282,585.36
  6. Step 6: Final answer
    x = 214,259.51

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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.