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Finding the Fourth Proportional to 238,950.40, 358,458.24 and 81,136.48

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Solution

The fourth proportional to 238,950.40, 358,458.24 and 81,136.48 is: 121,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,950.40 : 358,458.24 = 81,136.48 : x
  2. Step 2: Convert to fraction form
    238,950.40/358,458.24 = 81,136.48/x
  3. Step 3: Cross multiply
    238,950.40x = 358,458.24 × 81,136.48
  4. Step 4: Simplify right side
    238,950.40x = 29,084,039,820.60
  5. Step 5: Solve for x
    x = 29,084,039,820.60/238,950.40
  6. Step 6: Final answer
    x = 121,715.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.