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Finding the Fourth Proportional to 338,652.56, 508,063.31 and 239,007.40

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Solution

The fourth proportional to 338,652.56, 508,063.31 and 239,007.40 is: 358,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,652.56 : 508,063.31 = 239,007.40 : x
  2. Step 2: Convert to fraction form
    338,652.56/508,063.31 = 239,007.40/x
  3. Step 3: Cross multiply
    338,652.56x = 508,063.31 × 239,007.40
  4. Step 4: Simplify right side
    338,652.56x = 121,430,887,023.14
  5. Step 5: Solve for x
    x = 121,430,887,023.14/338,652.56
  6. Step 6: Final answer
    x = 358,570.70

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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.