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Finding the Fourth Proportional to 262,500.20, 393,750.30 and 72,960.20

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Solution

The fourth proportional to 262,500.20, 393,750.30 and 72,960.20 is: 109,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,500.20 : 393,750.30 = 72,960.20 : x
  2. Step 2: Convert to fraction form
    262,500.20/393,750.30 = 72,960.20/x
  3. Step 3: Cross multiply
    262,500.20x = 393,750.30 × 72,960.20
  4. Step 4: Simplify right side
    262,500.20x = 28,728,100,638.06
  5. Step 5: Solve for x
    x = 28,728,100,638.06/262,500.20
  6. Step 6: Final answer
    x = 109,440.30

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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.