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Finding the Fourth Proportional to 265,520.80, 398,281.20 and 223,530.40

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Solution

The fourth proportional to 265,520.80, 398,281.20 and 223,530.40 is: 335,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,520.80 : 398,281.20 = 223,530.40 : x
  2. Step 2: Convert to fraction form
    265,520.80/398,281.20 = 223,530.40/x
  3. Step 3: Cross multiply
    265,520.80x = 398,281.20 × 223,530.40
  4. Step 4: Simplify right side
    265,520.80x = 89,027,955,948.48
  5. Step 5: Solve for x
    x = 89,027,955,948.48/265,520.80
  6. Step 6: Final answer
    x = 335,295.60

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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.