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Finding the Fourth Proportional to 487,773.10, 672,832.20 and 322,202.08

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Solution

The fourth proportional to 487,773.10, 672,832.20 and 322,202.08 is: 444,444.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,773.10 : 672,832.20 = 322,202.08 : x
  2. Step 2: Convert to fraction form
    487,773.10/672,832.20 = 322,202.08/x
  3. Step 3: Cross multiply
    487,773.10x = 672,832.20 × 322,202.08
  4. Step 4: Simplify right side
    487,773.10x = 216,787,934,330.98
  5. Step 5: Solve for x
    x = 216,787,934,330.98/487,773.10
  6. Step 6: Final answer
    x = 444,444.22

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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.