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Finding the Fourth Proportional to 221,460.17, 305,614.95 and 120,858.17

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Solution

The fourth proportional to 221,460.17, 305,614.95 and 120,858.17 is: 166,784.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,460.17 : 305,614.95 = 120,858.17 : x
  2. Step 2: Convert to fraction form
    221,460.17/305,614.95 = 120,858.17/x
  3. Step 3: Cross multiply
    221,460.17x = 305,614.95 × 120,858.17
  4. Step 4: Simplify right side
    221,460.17x = 36,936,064,345.68
  5. Step 5: Solve for x
    x = 36,936,064,345.68/221,460.17
  6. Step 6: Final answer
    x = 166,784.23

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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.