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Finding the Fourth Proportional to 265,215.40, 397,385.70 and 220,600.60

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Solution

The fourth proportional to 265,215.40, 397,385.70 and 220,600.60 is: 330,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,215.40 : 397,385.70 = 220,600.60 : x
  2. Step 2: Convert to fraction form
    265,215.40/397,385.70 = 220,600.60/x
  3. Step 3: Cross multiply
    265,215.40x = 397,385.70 × 220,600.60
  4. Step 4: Simplify right side
    265,215.40x = 87,663,523,851.42
  5. Step 5: Solve for x
    x = 87,663,523,851.42/265,215.40
  6. Step 6: Final answer
    x = 330,537.08

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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.