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Finding the Fourth Proportional to 638,266.52, 957,563.82 and 238,913

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Solution

The fourth proportional to 638,266.52, 957,563.82 and 238,913 is: 358,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,266.52 : 957,563.82 = 238,913 : x
  2. Step 2: Convert to fraction form
    638,266.52/957,563.82 = 238,913/x
  3. Step 3: Cross multiply
    638,266.52x = 957,563.82 × 238,913
  4. Step 4: Simplify right side
    638,266.52x = 228,774,444,927.66
  5. Step 5: Solve for x
    x = 228,774,444,927.66/638,266.52
  6. Step 6: Final answer
    x = 358,430.90

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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.