Home / 240,205.81-331,516.95-138,229.18

Finding the Fourth Proportional to 240,205.81, 331,516.95 and 138,229.18

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Solution

The fourth proportional to 240,205.81, 331,516.95 and 138,229.18 is: 190,775.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,205.81 : 331,516.95 = 138,229.18 : x
  2. Step 2: Convert to fraction form
    240,205.81/331,516.95 = 138,229.18/x
  3. Step 3: Cross multiply
    240,205.81x = 331,516.95 × 138,229.18
  4. Step 4: Simplify right side
    240,205.81x = 45,825,316,154.60
  5. Step 5: Solve for x
    x = 45,825,316,154.60/240,205.81
  6. Step 6: Final answer
    x = 190,775.22

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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.