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Finding the Fourth Proportional to 454,625.20, 681,646.20 and 188,491.60

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Solution

The fourth proportional to 454,625.20, 681,646.20 and 188,491.60 is: 282,616.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,625.20 : 681,646.20 = 188,491.60 : x
  2. Step 2: Convert to fraction form
    454,625.20/681,646.20 = 188,491.60/x
  3. Step 3: Cross multiply
    454,625.20x = 681,646.20 × 188,491.60
  4. Step 4: Simplify right side
    454,625.20x = 128,484,582,871.92
  5. Step 5: Solve for x
    x = 128,484,582,871.92/454,625.20
  6. Step 6: Final answer
    x = 282,616.50

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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.