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Finding the Fourth Proportional to 538,748.54, 808,126.85 and 239,148.57

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Solution

The fourth proportional to 538,748.54, 808,126.85 and 239,148.57 is: 358,724.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,748.54 : 808,126.85 = 239,148.57 : x
  2. Step 2: Convert to fraction form
    538,748.54/808,126.85 = 239,148.57/x
  3. Step 3: Cross multiply
    538,748.54x = 808,126.85 × 239,148.57
  4. Step 4: Simplify right side
    538,748.54x = 193,262,379,360.36
  5. Step 5: Solve for x
    x = 193,262,379,360.36/538,748.54
  6. Step 6: Final answer
    x = 358,724.65

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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.