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Finding the Fourth Proportional to 479,145.75, 661,224.20 and 264,291.63

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Solution

The fourth proportional to 479,145.75, 661,224.20 and 264,291.63 is: 364,724.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,145.75 : 661,224.20 = 264,291.63 : x
  2. Step 2: Convert to fraction form
    479,145.75/661,224.20 = 264,291.63/x
  3. Step 3: Cross multiply
    479,145.75x = 661,224.20 × 264,291.63
  4. Step 4: Simplify right side
    479,145.75x = 174,756,020,291.99
  5. Step 5: Solve for x
    x = 174,756,020,291.99/479,145.75
  6. Step 6: Final answer
    x = 364,724.14

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Double scale
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Similar ratio
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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.