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Finding the Fourth Proportional to 338,732.58, 508,378.40 and 170,300.78

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Solution

The fourth proportional to 338,732.58, 508,378.40 and 170,300.78 is: 255,591.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,732.58 : 508,378.40 = 170,300.78 : x
  2. Step 2: Convert to fraction form
    338,732.58/508,378.40 = 170,300.78/x
  3. Step 3: Cross multiply
    338,732.58x = 508,378.40 × 170,300.78
  4. Step 4: Simplify right side
    338,732.58x = 86,577,234,661.76
  5. Step 5: Solve for x
    x = 86,577,234,661.76/338,732.58
  6. Step 6: Final answer
    x = 255,591.70

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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.