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Finding the Fourth Proportional to 551,155.80, 760,536.24 and 309,464.94

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Solution

The fourth proportional to 551,155.80, 760,536.24 and 309,464.94 is: 427,028.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,155.80 : 760,536.24 = 309,464.94 : x
  2. Step 2: Convert to fraction form
    551,155.80/760,536.24 = 309,464.94/x
  3. Step 3: Cross multiply
    551,155.80x = 760,536.24 × 309,464.94
  4. Step 4: Simplify right side
    551,155.80x = 235,359,301,879.43
  5. Step 5: Solve for x
    x = 235,359,301,879.43/551,155.80
  6. Step 6: Final answer
    x = 427,028.62

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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.