Home / 370,128.50-555,197.30-130,249.56

Finding the Fourth Proportional to 370,128.50, 555,197.30 and 130,249.56

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Solution

The fourth proportional to 370,128.50, 555,197.30 and 130,249.56 is: 195,375.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,128.50 : 555,197.30 = 130,249.56 : x
  2. Step 2: Convert to fraction form
    370,128.50/555,197.30 = 130,249.56/x
  3. Step 3: Cross multiply
    370,128.50x = 555,197.30 × 130,249.56
  4. Step 4: Simplify right side
    370,128.50x = 72,314,204,038.19
  5. Step 5: Solve for x
    x = 72,314,204,038.19/370,128.50
  6. Step 6: Final answer
    x = 195,375.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.