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Finding the Fourth Proportional to 275,688.20, 413,532.30 and 253,915.40

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Solution

The fourth proportional to 275,688.20, 413,532.30 and 253,915.40 is: 380,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,688.20 : 413,532.30 = 253,915.40 : x
  2. Step 2: Convert to fraction form
    275,688.20/413,532.30 = 253,915.40/x
  3. Step 3: Cross multiply
    275,688.20x = 413,532.30 × 253,915.40
  4. Step 4: Simplify right side
    275,688.20x = 105,002,219,367.42
  5. Step 5: Solve for x
    x = 105,002,219,367.42/275,688.20
  6. Step 6: Final answer
    x = 380,873.10

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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.