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Finding the Fourth Proportional to 373,277.20, 559,915.80 and 279,965.20

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Solution

The fourth proportional to 373,277.20, 559,915.80 and 279,965.20 is: 419,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,277.20 : 559,915.80 = 279,965.20 : x
  2. Step 2: Convert to fraction form
    373,277.20/559,915.80 = 279,965.20/x
  3. Step 3: Cross multiply
    373,277.20x = 559,915.80 × 279,965.20
  4. Step 4: Simplify right side
    373,277.20x = 156,756,938,930.16
  5. Step 5: Solve for x
    x = 156,756,938,930.16/373,277.20
  6. Step 6: Final answer
    x = 419,947.80

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1.5x scale

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.