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Finding the Fourth Proportional to 431,981.79, 648,261.91 and 179,262.51

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Solution

The fourth proportional to 431,981.79, 648,261.91 and 179,262.51 is: 269,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,981.79 : 648,261.91 = 179,262.51 : x
  2. Step 2: Convert to fraction form
    431,981.79/648,261.91 = 179,262.51/x
  3. Step 3: Cross multiply
    431,981.79x = 648,261.91 × 179,262.51
  4. Step 4: Simplify right side
    431,981.79x = 116,209,057,123.99
  5. Step 5: Solve for x
    x = 116,209,057,123.99/431,981.79
  6. Step 6: Final answer
    x = 269,013.79

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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.