Home / 291,223.67-402,012.66-195,785.72

Finding the Fourth Proportional to 291,223.67, 402,012.66 and 195,785.72

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Solution

The fourth proportional to 291,223.67, 402,012.66 and 195,785.72 is: 270,267.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,223.67 : 402,012.66 = 195,785.72 : x
  2. Step 2: Convert to fraction form
    291,223.67/402,012.66 = 195,785.72/x
  3. Step 3: Cross multiply
    291,223.67x = 402,012.66 × 195,785.72
  4. Step 4: Simplify right side
    291,223.67x = 78,708,338,087.22
  5. Step 5: Solve for x
    x = 78,708,338,087.22/291,223.67
  6. Step 6: Final answer
    x = 270,267.65

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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.