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Finding the Fourth Proportional to 488,188.15, 673,642.04 and 281,454.21

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Solution

The fourth proportional to 488,188.15, 673,642.04 and 281,454.21 is: 388,373.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,188.15 : 673,642.04 = 281,454.21 : x
  2. Step 2: Convert to fraction form
    488,188.15/673,642.04 = 281,454.21/x
  3. Step 3: Cross multiply
    488,188.15x = 673,642.04 × 281,454.21
  4. Step 4: Simplify right side
    488,188.15x = 189,599,386,783.72
  5. Step 5: Solve for x
    x = 189,599,386,783.72/488,188.15
  6. Step 6: Final answer
    x = 388,373.60

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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.