Home / 353,629.84-530,439.56-87,390.35

Finding the Fourth Proportional to 353,629.84, 530,439.56 and 87,390.35

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Solution

The fourth proportional to 353,629.84, 530,439.56 and 87,390.35 is: 131,084.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,629.84 : 530,439.56 = 87,390.35 : x
  2. Step 2: Convert to fraction form
    353,629.84/530,439.56 = 87,390.35/x
  3. Step 3: Cross multiply
    353,629.84x = 530,439.56 × 87,390.35
  4. Step 4: Simplify right side
    353,629.84x = 46,355,296,150.05
  5. Step 5: Solve for x
    x = 46,355,296,150.05/353,629.84
  6. Step 6: Final answer
    x = 131,084.23

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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.