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Finding the Fourth Proportional to 403,468.20, 605,202.30 and 262,463.40

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Solution

The fourth proportional to 403,468.20, 605,202.30 and 262,463.40 is: 393,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,468.20 : 605,202.30 = 262,463.40 : x
  2. Step 2: Convert to fraction form
    403,468.20/605,202.30 = 262,463.40/x
  3. Step 3: Cross multiply
    403,468.20x = 605,202.30 × 262,463.40
  4. Step 4: Simplify right side
    403,468.20x = 158,843,453,345.82
  5. Step 5: Solve for x
    x = 158,843,453,345.82/403,468.20
  6. Step 6: Final answer
    x = 393,695.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.