Home / 291,223.36-402,012.20-195,785.40

Finding the Fourth Proportional to 291,223.36, 402,012.20 and 195,785.40

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Solution

The fourth proportional to 291,223.36, 402,012.20 and 195,785.40 is: 270,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,223.36 : 402,012.20 = 195,785.40 : x
  2. Step 2: Convert to fraction form
    291,223.36/402,012.20 = 195,785.40/x
  3. Step 3: Cross multiply
    291,223.36x = 402,012.20 × 195,785.40
  4. Step 4: Simplify right side
    291,223.36x = 78,708,119,381.88
  5. Step 5: Solve for x
    x = 78,708,119,381.88/291,223.36
  6. Step 6: Final answer
    x = 270,267.19

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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.