Home / 217,439.08-299,938.50-136,738.60

Finding the Fourth Proportional to 217,439.08, 299,938.50 and 136,738.60

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Solution

The fourth proportional to 217,439.08, 299,938.50 and 136,738.60 is: 188,619.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,439.08 : 299,938.50 = 136,738.60 : x
  2. Step 2: Convert to fraction form
    217,439.08/299,938.50 = 136,738.60/x
  3. Step 3: Cross multiply
    217,439.08x = 299,938.50 × 136,738.60
  4. Step 4: Simplify right side
    217,439.08x = 41,013,170,576.10
  5. Step 5: Solve for x
    x = 41,013,170,576.10/217,439.08
  6. Step 6: Final answer
    x = 188,619.13

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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.