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Finding the Fourth Proportional to 638,239.50, 957,523.28 and 238,886.01

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Solution

The fourth proportional to 638,239.50, 957,523.28 and 238,886.01 is: 358,390.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,239.50 : 957,523.28 = 238,886.01 : x
  2. Step 2: Convert to fraction form
    638,239.50/957,523.28 = 238,886.01/x
  3. Step 3: Cross multiply
    638,239.50x = 957,523.28 × 238,886.01
  4. Step 4: Simplify right side
    638,239.50x = 228,738,914,646.88
  5. Step 5: Solve for x
    x = 228,738,914,646.88/638,239.50
  6. Step 6: Final answer
    x = 358,390.41

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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.