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Finding the Fourth Proportional to 366,915.20, 550,372.80 and 314,427.20

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Solution

The fourth proportional to 366,915.20, 550,372.80 and 314,427.20 is: 471,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,915.20 : 550,372.80 = 314,427.20 : x
  2. Step 2: Convert to fraction form
    366,915.20/550,372.80 = 314,427.20/x
  3. Step 3: Cross multiply
    366,915.20x = 550,372.80 × 314,427.20
  4. Step 4: Simplify right side
    366,915.20x = 173,052,178,460.16
  5. Step 5: Solve for x
    x = 173,052,178,460.16/366,915.20
  6. Step 6: Final answer
    x = 471,640.80

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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.