Home / 238,538.40-329,136.48-153,643.20

Finding the Fourth Proportional to 238,538.40, 329,136.48 and 153,643.20

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Solution

The fourth proportional to 238,538.40, 329,136.48 and 153,643.20 is: 211,997.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,538.40 : 329,136.48 = 153,643.20 : x
  2. Step 2: Convert to fraction form
    238,538.40/329,136.48 = 153,643.20/x
  3. Step 3: Cross multiply
    238,538.40x = 329,136.48 × 153,643.20
  4. Step 4: Simplify right side
    238,538.40x = 50,569,582,023.94
  5. Step 5: Solve for x
    x = 50,569,582,023.94/238,538.40
  6. Step 6: Final answer
    x = 211,997.66

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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.