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Finding the Fourth Proportional to 438,863.31, 605,459.92 and 255,071.34

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Solution

The fourth proportional to 438,863.31, 605,459.92 and 255,071.34 is: 351,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,863.31 : 605,459.92 = 255,071.34 : x
  2. Step 2: Convert to fraction form
    438,863.31/605,459.92 = 255,071.34/x
  3. Step 3: Cross multiply
    438,863.31x = 605,459.92 × 255,071.34
  4. Step 4: Simplify right side
    438,863.31x = 154,435,474,624.34
  5. Step 5: Solve for x
    x = 154,435,474,624.34/438,863.31
  6. Step 6: Final answer
    x = 351,898.80

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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.