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Finding the Fourth Proportional to 205,591.60, 308,140.62 and 105,798.88

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Solution

The fourth proportional to 205,591.60, 308,140.62 and 105,798.88 is: 158,571.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,591.60 : 308,140.62 = 105,798.88 : x
  2. Step 2: Convert to fraction form
    205,591.60/308,140.62 = 105,798.88/x
  3. Step 3: Cross multiply
    205,591.60x = 308,140.62 × 105,798.88
  4. Step 4: Simplify right side
    205,591.60x = 32,600,932,478.51
  5. Step 5: Solve for x
    x = 32,600,932,478.51/205,591.60
  6. Step 6: Final answer
    x = 158,571.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.