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Finding the Fourth Proportional to 216,486.06, 298,727.86 and 119,674.31

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Solution

The fourth proportional to 216,486.06, 298,727.86 and 119,674.31 is: 165,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,486.06 : 298,727.86 = 119,674.31 : x
  2. Step 2: Convert to fraction form
    216,486.06/298,727.86 = 119,674.31/x
  3. Step 3: Cross multiply
    216,486.06x = 298,727.86 × 119,674.31
  4. Step 4: Simplify right side
    216,486.06x = 35,750,051,979.80
  5. Step 5: Solve for x
    x = 35,750,051,979.80/216,486.06
  6. Step 6: Final answer
    x = 165,137.90

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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.