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Finding the Fourth Proportional to 216,751.72, 299,121.96 and 130,710.64

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Solution

The fourth proportional to 216,751.72, 299,121.96 and 130,710.64 is: 180,383.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,751.72 : 299,121.96 = 130,710.64 : x
  2. Step 2: Convert to fraction form
    216,751.72/299,121.96 = 130,710.64/x
  3. Step 3: Cross multiply
    216,751.72x = 299,121.96 × 130,710.64
  4. Step 4: Simplify right side
    216,751.72x = 39,098,422,829.65
  5. Step 5: Solve for x
    x = 39,098,422,829.65/216,751.72
  6. Step 6: Final answer
    x = 180,383.45

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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.