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Finding the Fourth Proportional to 478,764.81, 660,687.48 and 263,924.82

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Solution

The fourth proportional to 478,764.81, 660,687.48 and 263,924.82 is: 364,211.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,764.81 : 660,687.48 = 263,924.82 : x
  2. Step 2: Convert to fraction form
    478,764.81/660,687.48 = 263,924.82/x
  3. Step 3: Cross multiply
    478,764.81x = 660,687.48 × 263,924.82
  4. Step 4: Simplify right side
    478,764.81x = 174,371,824,235.25
  5. Step 5: Solve for x
    x = 174,371,824,235.25/478,764.81
  6. Step 6: Final answer
    x = 364,211.86

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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.