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Finding the Fourth Proportional to 667,155.51, 920,673.27 and 361,232.19

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Solution

The fourth proportional to 667,155.51, 920,673.27 and 361,232.19 is: 498,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,155.51 : 920,673.27 = 361,232.19 : x
  2. Step 2: Convert to fraction form
    667,155.51/920,673.27 = 361,232.19/x
  3. Step 3: Cross multiply
    667,155.51x = 920,673.27 × 361,232.19
  4. Step 4: Simplify right side
    667,155.51x = 332,576,821,596.56
  5. Step 5: Solve for x
    x = 332,576,821,596.56/667,155.51
  6. Step 6: Final answer
    x = 498,499.70

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1.5x scale

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.