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Finding the Fourth Proportional to 265,423.20, 398,134.80 and 202,437.60

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Solution

The fourth proportional to 265,423.20, 398,134.80 and 202,437.60 is: 303,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,423.20 : 398,134.80 = 202,437.60 : x
  2. Step 2: Convert to fraction form
    265,423.20/398,134.80 = 202,437.60/x
  3. Step 3: Cross multiply
    265,423.20x = 398,134.80 × 202,437.60
  4. Step 4: Simplify right side
    265,423.20x = 80,597,453,388.48
  5. Step 5: Solve for x
    x = 80,597,453,388.48/265,423.20
  6. Step 6: Final answer
    x = 303,656.40

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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.