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Finding the Fourth Proportional to 551,091.29, 760,463.99 and 309,327.15

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Solution

The fourth proportional to 551,091.29, 760,463.99 and 309,327.15 is: 426,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,091.29 : 760,463.99 = 309,327.15 : x
  2. Step 2: Convert to fraction form
    551,091.29/760,463.99 = 309,327.15/x
  3. Step 3: Cross multiply
    551,091.29x = 760,463.99 × 309,327.15
  4. Step 4: Simplify right side
    551,091.29x = 235,232,159,465.60
  5. Step 5: Solve for x
    x = 235,232,159,465.60/551,091.29
  6. Step 6: Final answer
    x = 426,847.90

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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.