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Finding the Fourth Proportional to 286,812.74, 395,785.28 and 159,485.60

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Solution

The fourth proportional to 286,812.74, 395,785.28 and 159,485.60 is: 220,081.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,812.74 : 395,785.28 = 159,485.60 : x
  2. Step 2: Convert to fraction form
    286,812.74/395,785.28 = 159,485.60/x
  3. Step 3: Cross multiply
    286,812.74x = 395,785.28 × 159,485.60
  4. Step 4: Simplify right side
    286,812.74x = 63,122,052,851.97
  5. Step 5: Solve for x
    x = 63,122,052,851.97/286,812.74
  6. Step 6: Final answer
    x = 220,081.06

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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.