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Finding the Fourth Proportional to 340,279.20, 469,580.68 and 189,376.20

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Solution

The fourth proportional to 340,279.20, 469,580.68 and 189,376.20 is: 261,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,279.20 : 469,580.68 = 189,376.20 : x
  2. Step 2: Convert to fraction form
    340,279.20/469,580.68 = 189,376.20/x
  3. Step 3: Cross multiply
    340,279.20x = 469,580.68 × 189,376.20
  4. Step 4: Simplify right side
    340,279.20x = 88,927,404,771.82
  5. Step 5: Solve for x
    x = 88,927,404,771.82/340,279.20
  6. Step 6: Final answer
    x = 261,336.59

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1.5x scale

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.