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Finding the Fourth Proportional to 238,803.71, 358,192.61 and 72,578.75

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Solution

The fourth proportional to 238,803.71, 358,192.61 and 72,578.75 is: 108,864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,803.71 : 358,192.61 = 72,578.75 : x
  2. Step 2: Convert to fraction form
    238,803.71/358,192.61 = 72,578.75/x
  3. Step 3: Cross multiply
    238,803.71x = 358,192.61 × 72,578.75
  4. Step 4: Simplify right side
    238,803.71x = 25,997,171,530.14
  5. Step 5: Solve for x
    x = 25,997,171,530.14/238,803.71
  6. Step 6: Final answer
    x = 108,864.19

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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.