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Finding the Fourth Proportional to 487,903.74, 673,377.60 and 281,132.56

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Solution

The fourth proportional to 487,903.74, 673,377.60 and 281,132.56 is: 388,003.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,903.74 : 673,377.60 = 281,132.56 : x
  2. Step 2: Convert to fraction form
    487,903.74/673,377.60 = 281,132.56/x
  3. Step 3: Cross multiply
    487,903.74x = 673,377.60 × 281,132.56
  4. Step 4: Simplify right side
    487,903.74x = 189,308,368,534.66
  5. Step 5: Solve for x
    x = 189,308,368,534.66/487,903.74
  6. Step 6: Final answer
    x = 388,003.52

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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.