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Finding the Fourth Proportional to 438,679.60, 605,379.78 and 237,475.60

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Solution

The fourth proportional to 438,679.60, 605,379.78 and 237,475.60 is: 327,717.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,679.60 : 605,379.78 = 237,475.60 : x
  2. Step 2: Convert to fraction form
    438,679.60/605,379.78 = 237,475.60/x
  3. Step 3: Cross multiply
    438,679.60x = 605,379.78 × 237,475.60
  4. Step 4: Simplify right side
    438,679.60x = 143,762,926,483.37
  5. Step 5: Solve for x
    x = 143,762,926,483.37/438,679.60
  6. Step 6: Final answer
    x = 327,717.37

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1.5x scale

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.