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Finding the Fourth Proportional to 457,139.60, 685,709.40 and 161,651.60

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Solution

The fourth proportional to 457,139.60, 685,709.40 and 161,651.60 is: 242,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,139.60 : 685,709.40 = 161,651.60 : x
  2. Step 2: Convert to fraction form
    457,139.60/685,709.40 = 161,651.60/x
  3. Step 3: Cross multiply
    457,139.60x = 685,709.40 × 161,651.60
  4. Step 4: Simplify right side
    457,139.60x = 110,846,021,645.04
  5. Step 5: Solve for x
    x = 110,846,021,645.04/457,139.60
  6. Step 6: Final answer
    x = 242,477.40

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Similar ratio
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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.