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Finding the Fourth Proportional to 331,969.78, 458,117.13 and 188,729.79

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Solution

The fourth proportional to 331,969.78, 458,117.13 and 188,729.79 is: 260,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,969.78 : 458,117.13 = 188,729.79 : x
  2. Step 2: Convert to fraction form
    331,969.78/458,117.13 = 188,729.79/x
  3. Step 3: Cross multiply
    331,969.78x = 458,117.13 × 188,729.79
  4. Step 4: Simplify right side
    331,969.78x = 86,460,349,740.30
  5. Step 5: Solve for x
    x = 86,460,349,740.30/331,969.78
  6. Step 6: Final answer
    x = 260,446.45

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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.