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Finding the Fourth Proportional to 216,504.76, 298,790.58 and 121,015.48

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Solution

The fourth proportional to 216,504.76, 298,790.58 and 121,015.48 is: 167,009.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,504.76 : 298,790.58 = 121,015.48 : x
  2. Step 2: Convert to fraction form
    216,504.76/298,790.58 = 121,015.48/x
  3. Step 3: Cross multiply
    216,504.76x = 298,790.58 × 121,015.48
  4. Step 4: Simplify right side
    216,504.76x = 36,158,285,458.18
  5. Step 5: Solve for x
    x = 36,158,285,458.18/216,504.76
  6. Step 6: Final answer
    x = 167,009.19

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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.