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Finding the Fourth Proportional to 638,261.52, 957,556.32 and 238,908

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Solution

The fourth proportional to 638,261.52, 957,556.32 and 238,908 is: 358,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,261.52 : 957,556.32 = 238,908 : x
  2. Step 2: Convert to fraction form
    638,261.52/957,556.32 = 238,908/x
  3. Step 3: Cross multiply
    638,261.52x = 957,556.32 × 238,908
  4. Step 4: Simplify right side
    638,261.52x = 228,767,865,298.56
  5. Step 5: Solve for x
    x = 228,767,865,298.56/638,261.52
  6. Step 6: Final answer
    x = 358,423.40

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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.