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Finding the Fourth Proportional to 638,014.50, 957,187.80 and 238,686.48

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Solution

The fourth proportional to 638,014.50, 957,187.80 and 238,686.48 is: 358,091.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,014.50 : 957,187.80 = 238,686.48 : x
  2. Step 2: Convert to fraction form
    638,014.50/957,187.80 = 238,686.48/x
  3. Step 3: Cross multiply
    638,014.50x = 957,187.80 × 238,686.48
  4. Step 4: Simplify right side
    638,014.50x = 228,467,786,680.94
  5. Step 5: Solve for x
    x = 228,467,786,680.94/638,014.50
  6. Step 6: Final answer
    x = 358,091.84

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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.