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Finding the Fourth Proportional to 238,515.48, 329,079.48 and 142,987.32

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Solution

The fourth proportional to 238,515.48, 329,079.48 and 142,987.32 is: 197,279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,515.48 : 329,079.48 = 142,987.32 : x
  2. Step 2: Convert to fraction form
    238,515.48/329,079.48 = 142,987.32/x
  3. Step 3: Cross multiply
    238,515.48x = 329,079.48 × 142,987.32
  4. Step 4: Simplify right side
    238,515.48x = 47,054,192,912.19
  5. Step 5: Solve for x
    x = 47,054,192,912.19/238,515.48
  6. Step 6: Final answer
    x = 197,279.41

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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.