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Finding the Fourth Proportional to 338,650.56, 508,060.31 and 239,005.40

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Solution

The fourth proportional to 338,650.56, 508,060.31 and 239,005.40 is: 358,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,650.56 : 508,060.31 = 239,005.40 : x
  2. Step 2: Convert to fraction form
    338,650.56/508,060.31 = 239,005.40/x
  3. Step 3: Cross multiply
    338,650.56x = 508,060.31 × 239,005.40
  4. Step 4: Simplify right side
    338,650.56x = 121,429,153,880.35
  5. Step 5: Solve for x
    x = 121,429,153,880.35/338,650.56
  6. Step 6: Final answer
    x = 358,567.70

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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.