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Finding the Fourth Proportional to 238,279.69, 328,899.78 and 153,396.75

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Solution

The fourth proportional to 238,279.69, 328,899.78 and 153,396.75 is: 211,735.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,279.69 : 328,899.78 = 153,396.75 : x
  2. Step 2: Convert to fraction form
    238,279.69/328,899.78 = 153,396.75/x
  3. Step 3: Cross multiply
    238,279.69x = 328,899.78 × 153,396.75
  4. Step 4: Simplify right side
    238,279.69x = 50,452,157,327.72
  5. Step 5: Solve for x
    x = 50,452,157,327.72/238,279.69
  6. Step 6: Final answer
    x = 211,735.03

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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.