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Finding the Fourth Proportional to 488,188.65, 673,642.73 and 281,454.71

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Solution

The fourth proportional to 488,188.65, 673,642.73 and 281,454.71 is: 388,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,188.65 : 673,642.73 = 281,454.71 : x
  2. Step 2: Convert to fraction form
    488,188.65/673,642.73 = 281,454.71/x
  3. Step 3: Cross multiply
    488,188.65x = 673,642.73 × 281,454.71
  4. Step 4: Simplify right side
    488,188.65x = 189,599,917,808.49
  5. Step 5: Solve for x
    x = 189,599,917,808.49/488,188.65
  6. Step 6: Final answer
    x = 388,374.28

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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.