Home / 238,923.36-329,714.16-138,319.20

Finding the Fourth Proportional to 238,923.36, 329,714.16 and 138,319.20

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Solution

The fourth proportional to 238,923.36, 329,714.16 and 138,319.20 is: 190,880.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,923.36 : 329,714.16 = 138,319.20 : x
  2. Step 2: Convert to fraction form
    238,923.36/329,714.16 = 138,319.20/x
  3. Step 3: Cross multiply
    238,923.36x = 329,714.16 × 138,319.20
  4. Step 4: Simplify right side
    238,923.36x = 45,605,798,839.87
  5. Step 5: Solve for x
    x = 45,605,798,839.87/238,923.36
  6. Step 6: Final answer
    x = 190,880.45

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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.