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Finding the Fourth Proportional to 488,311.16, 673,703.15 and 284,318.91

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Solution

The fourth proportional to 488,311.16, 673,703.15 and 284,318.91 is: 392,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,311.16 : 673,703.15 = 284,318.91 : x
  2. Step 2: Convert to fraction form
    488,311.16/673,703.15 = 284,318.91/x
  3. Step 3: Cross multiply
    488,311.16x = 673,703.15 × 284,318.91
  4. Step 4: Simplify right side
    488,311.16x = 191,546,543,849.97
  5. Step 5: Solve for x
    x = 191,546,543,849.97/488,311.16
  6. Step 6: Final answer
    x = 392,263.30

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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.