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Finding the Fourth Proportional to 479,138.48, 661,208.42 and 264,278.06

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Solution

The fourth proportional to 479,138.48, 661,208.42 and 264,278.06 is: 364,702.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,138.48 : 661,208.42 = 264,278.06 : x
  2. Step 2: Convert to fraction form
    479,138.48/661,208.42 = 264,278.06/x
  3. Step 3: Cross multiply
    479,138.48x = 661,208.42 × 264,278.06
  4. Step 4: Simplify right side
    479,138.48x = 174,742,877,171.88
  5. Step 5: Solve for x
    x = 174,742,877,171.88/479,138.48
  6. Step 6: Final answer
    x = 364,702.24

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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.