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Finding the Fourth Proportional to 234,720.86, 323,960.72 and 154,146.31

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Solution

The fourth proportional to 234,720.86, 323,960.72 and 154,146.31 is: 212,752.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,720.86 : 323,960.72 = 154,146.31 : x
  2. Step 2: Convert to fraction form
    234,720.86/323,960.72 = 154,146.31/x
  3. Step 3: Cross multiply
    234,720.86x = 323,960.72 × 154,146.31
  4. Step 4: Simplify right side
    234,720.86x = 49,937,347,992.31
  5. Step 5: Solve for x
    x = 49,937,347,992.31/234,720.86
  6. Step 6: Final answer
    x = 212,752.07

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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.