Home / 312,928.11-469,428.82-99,621.32

Finding the Fourth Proportional to 312,928.11, 469,428.82 and 99,621.32

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Solution

The fourth proportional to 312,928.11, 469,428.82 and 99,621.32 is: 149,443.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,928.11 : 469,428.82 = 99,621.32 : x
  2. Step 2: Convert to fraction form
    312,928.11/469,428.82 = 99,621.32/x
  3. Step 3: Cross multiply
    312,928.11x = 469,428.82 × 99,621.32
  4. Step 4: Simplify right side
    312,928.11x = 46,765,116,098.25
  5. Step 5: Solve for x
    x = 46,765,116,098.25/312,928.11
  6. Step 6: Final answer
    x = 149,443.64

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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.