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Finding the Fourth Proportional to 216,437.67, 298,678.24 and 120,945.15

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Solution

The fourth proportional to 216,437.67, 298,678.24 and 120,945.15 is: 166,901.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,437.67 : 298,678.24 = 120,945.15 : x
  2. Step 2: Convert to fraction form
    216,437.67/298,678.24 = 120,945.15/x
  3. Step 3: Cross multiply
    216,437.67x = 298,678.24 × 120,945.15
  4. Step 4: Simplify right side
    216,437.67x = 36,123,684,538.54
  5. Step 5: Solve for x
    x = 36,123,684,538.54/216,437.67
  6. Step 6: Final answer
    x = 166,901.10

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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.