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Finding the Fourth Proportional to 401,025.52, 553,416.45 and 219,737.80

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Solution

The fourth proportional to 401,025.52, 553,416.45 and 219,737.80 is: 303,238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,025.52 : 553,416.45 = 219,737.80 : x
  2. Step 2: Convert to fraction form
    401,025.52/553,416.45 = 219,737.80/x
  3. Step 3: Cross multiply
    401,025.52x = 553,416.45 × 219,737.80
  4. Step 4: Simplify right side
    401,025.52x = 121,606,510,439.73
  5. Step 5: Solve for x
    x = 121,606,510,439.73/401,025.52
  6. Step 6: Final answer
    x = 303,238.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.