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Finding the Fourth Proportional to 347,607, 479,697.66 and 188,631

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Solution

The fourth proportional to 347,607, 479,697.66 and 188,631 is: 260,310.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,607 : 479,697.66 = 188,631 : x
  2. Step 2: Convert to fraction form
    347,607/479,697.66 = 188,631/x
  3. Step 3: Cross multiply
    347,607x = 479,697.66 × 188,631
  4. Step 4: Simplify right side
    347,607x = 90,485,849,303.46
  5. Step 5: Solve for x
    x = 90,485,849,303.46/347,607
  6. Step 6: Final answer
    x = 260,310.78

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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.