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Finding the Fourth Proportional to 265,214.40, 397,384.20 and 220,599.60

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Solution

The fourth proportional to 265,214.40, 397,384.20 and 220,599.60 is: 330,535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,214.40 : 397,384.20 = 220,599.60 : x
  2. Step 2: Convert to fraction form
    265,214.40/397,384.20 = 220,599.60/x
  3. Step 3: Cross multiply
    265,214.40x = 397,384.20 × 220,599.60
  4. Step 4: Simplify right side
    265,214.40x = 87,662,795,566.32
  5. Step 5: Solve for x
    x = 87,662,795,566.32/265,214.40
  6. Step 6: Final answer
    x = 330,535.58

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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.