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Finding the Fourth Proportional to 298,076.58, 411,356.21 and 170,776.76

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Solution

The fourth proportional to 298,076.58, 411,356.21 and 170,776.76 is: 235,677.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,076.58 : 411,356.21 = 170,776.76 : x
  2. Step 2: Convert to fraction form
    298,076.58/411,356.21 = 170,776.76/x
  3. Step 3: Cross multiply
    298,076.58x = 411,356.21 × 170,776.76
  4. Step 4: Simplify right side
    298,076.58x = 70,250,077,839.01
  5. Step 5: Solve for x
    x = 70,250,077,839.01/298,076.58
  6. Step 6: Final answer
    x = 235,677.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.