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Finding the Fourth Proportional to 221,332.94, 331,312.16 and 119,879.01

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Solution

The fourth proportional to 221,332.94, 331,312.16 and 119,879.01 is: 179,446.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,332.94 : 331,312.16 = 119,879.01 : x
  2. Step 2: Convert to fraction form
    221,332.94/331,312.16 = 119,879.01/x
  3. Step 3: Cross multiply
    221,332.94x = 331,312.16 × 119,879.01
  4. Step 4: Simplify right side
    221,332.94x = 39,717,373,756.40
  5. Step 5: Solve for x
    x = 39,717,373,756.40/221,332.94
  6. Step 6: Final answer
    x = 179,446.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.