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Finding the Fourth Proportional to 445,642.38, 668,326.95 and 161,298.90

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Solution

The fourth proportional to 445,642.38, 668,326.95 and 161,298.90 is: 241,898.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,642.38 : 668,326.95 = 161,298.90 : x
  2. Step 2: Convert to fraction form
    445,642.38/668,326.95 = 161,298.90/x
  3. Step 3: Cross multiply
    445,642.38x = 668,326.95 × 161,298.90
  4. Step 4: Simplify right side
    445,642.38x = 107,800,401,875.36
  5. Step 5: Solve for x
    x = 107,800,401,875.36/445,642.38
  6. Step 6: Final answer
    x = 241,898.90

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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.