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Finding the Fourth Proportional to 431,980.79, 648,260.41 and 179,261.51

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Solution

The fourth proportional to 431,980.79, 648,260.41 and 179,261.51 is: 269,012.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,980.79 : 648,260.41 = 179,261.51 : x
  2. Step 2: Convert to fraction form
    431,980.79/648,260.41 = 179,261.51/x
  3. Step 3: Cross multiply
    431,980.79x = 648,260.41 × 179,261.51
  4. Step 4: Simplify right side
    431,980.79x = 116,208,141,142.32
  5. Step 5: Solve for x
    x = 116,208,141,142.32/431,980.79
  6. Step 6: Final answer
    x = 269,012.29

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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.