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Finding the Fourth Proportional to 403,897.40, 605,327.70 and 245,958.20

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Solution

The fourth proportional to 403,897.40, 605,327.70 and 245,958.20 is: 368,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,897.40 : 605,327.70 = 245,958.20 : x
  2. Step 2: Convert to fraction form
    403,897.40/605,327.70 = 245,958.20/x
  3. Step 3: Cross multiply
    403,897.40x = 605,327.70 × 245,958.20
  4. Step 4: Simplify right side
    403,897.40x = 148,885,311,502.14
  5. Step 5: Solve for x
    x = 148,885,311,502.14/403,897.40
  6. Step 6: Final answer
    x = 368,621.61

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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.