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Finding the Fourth Proportional to 886,468.32, 1,329,693.84 and 221,620.32

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Solution

The fourth proportional to 886,468.32, 1,329,693.84 and 221,620.32 is: 332,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,468.32 : 1,329,693.84 = 221,620.32 : x
  2. Step 2: Convert to fraction form
    886,468.32/1,329,693.84 = 221,620.32/x
  3. Step 3: Cross multiply
    886,468.32x = 1,329,693.84 × 221,620.32
  4. Step 4: Simplify right side
    886,468.32x = 294,687,174,322.83
  5. Step 5: Solve for x
    x = 294,687,174,322.83/886,468.32
  6. Step 6: Final answer
    x = 332,428.32

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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.