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Finding the Fourth Proportional to 445,643.38, 668,328.45 and 161,299.90

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Solution

The fourth proportional to 445,643.38, 668,328.45 and 161,299.90 is: 241,900.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,643.38 : 668,328.45 = 161,299.90 : x
  2. Step 2: Convert to fraction form
    445,643.38/668,328.45 = 161,299.90/x
  3. Step 3: Cross multiply
    445,643.38x = 668,328.45 × 161,299.90
  4. Step 4: Simplify right side
    445,643.38x = 107,801,312,152.16
  5. Step 5: Solve for x
    x = 107,801,312,152.16/445,643.38
  6. Step 6: Final answer
    x = 241,900.40

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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.