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Finding the Fourth Proportional to 479,656.74, 661,908.95 and 264,792.20

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Solution

The fourth proportional to 479,656.74, 661,908.95 and 264,792.20 is: 365,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,656.74 : 661,908.95 = 264,792.20 : x
  2. Step 2: Convert to fraction form
    479,656.74/661,908.95 = 264,792.20/x
  3. Step 3: Cross multiply
    479,656.74x = 661,908.95 × 264,792.20
  4. Step 4: Simplify right side
    479,656.74x = 175,268,324,919.11
  5. Step 5: Solve for x
    x = 175,268,324,919.11/479,656.74
  6. Step 6: Final answer
    x = 365,403.65

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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.