Home / 353,629.61-530,439.23-87,390.12

Finding the Fourth Proportional to 353,629.61, 530,439.23 and 87,390.12

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Solution

The fourth proportional to 353,629.61, 530,439.23 and 87,390.12 is: 131,083.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,629.61 : 530,439.23 = 87,390.12 : x
  2. Step 2: Convert to fraction form
    353,629.61/530,439.23 = 87,390.12/x
  3. Step 3: Cross multiply
    353,629.61x = 530,439.23 × 87,390.12
  4. Step 4: Simplify right side
    353,629.61x = 46,355,150,170.03
  5. Step 5: Solve for x
    x = 46,355,150,170.03/353,629.61
  6. Step 6: Final answer
    x = 131,083.90

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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.