Home / 217,646.81-300,352.59-122,153.50

Finding the Fourth Proportional to 217,646.81, 300,352.59 and 122,153.50

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Solution

The fourth proportional to 217,646.81, 300,352.59 and 122,153.50 is: 168,571.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,646.81 : 300,352.59 = 122,153.50 : x
  2. Step 2: Convert to fraction form
    217,646.81/300,352.59 = 122,153.50/x
  3. Step 3: Cross multiply
    217,646.81x = 300,352.59 × 122,153.50
  4. Step 4: Simplify right side
    217,646.81x = 36,689,120,102.57
  5. Step 5: Solve for x
    x = 36,689,120,102.57/217,646.81
  6. Step 6: Final answer
    x = 168,571.83

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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.