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Finding the Fourth Proportional to 216,500.50, 298,765.51 and 121,016.08

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Solution

The fourth proportional to 216,500.50, 298,765.51 and 121,016.08 is: 166,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,500.50 : 298,765.51 = 121,016.08 : x
  2. Step 2: Convert to fraction form
    216,500.50/298,765.51 = 121,016.08/x
  3. Step 3: Cross multiply
    216,500.50x = 298,765.51 × 121,016.08
  4. Step 4: Simplify right side
    216,500.50x = 36,155,430,859.40
  5. Step 5: Solve for x
    x = 36,155,430,859.40/216,500.50
  6. Step 6: Final answer
    x = 166,999.29

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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.