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Finding the Fourth Proportional to 408,127.20, 610,981.20 and 303,410.40

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Solution

The fourth proportional to 408,127.20, 610,981.20 and 303,410.40 is: 454,216.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,127.20 : 610,981.20 = 303,410.40 : x
  2. Step 2: Convert to fraction form
    408,127.20/610,981.20 = 303,410.40/x
  3. Step 3: Cross multiply
    408,127.20x = 610,981.20 × 303,410.40
  4. Step 4: Simplify right side
    408,127.20x = 185,378,050,284.48
  5. Step 5: Solve for x
    x = 185,378,050,284.48/408,127.20
  6. Step 6: Final answer
    x = 454,216.36

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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.