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Finding the Fourth Proportional to 220,438.30, 303,915.09 and 159,132.82

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Solution

The fourth proportional to 220,438.30, 303,915.09 and 159,132.82 is: 219,394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,438.30 : 303,915.09 = 159,132.82 : x
  2. Step 2: Convert to fraction form
    220,438.30/303,915.09 = 159,132.82/x
  3. Step 3: Cross multiply
    220,438.30x = 303,915.09 × 159,132.82
  4. Step 4: Simplify right side
    220,438.30x = 48,362,865,312.25
  5. Step 5: Solve for x
    x = 48,362,865,312.25/220,438.30
  6. Step 6: Final answer
    x = 219,394.11

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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.