Home / 286,778.88-430,161.03-76,416.21

Finding the Fourth Proportional to 286,778.88, 430,161.03 and 76,416.21

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Solution

The fourth proportional to 286,778.88, 430,161.03 and 76,416.21 is: 114,622.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,778.88 : 430,161.03 = 76,416.21 : x
  2. Step 2: Convert to fraction form
    286,778.88/430,161.03 = 76,416.21/x
  3. Step 3: Cross multiply
    286,778.88x = 430,161.03 × 76,416.21
  4. Step 4: Simplify right side
    286,778.88x = 32,871,275,602.30
  5. Step 5: Solve for x
    x = 32,871,275,602.30/286,778.88
  6. Step 6: Final answer
    x = 114,622.37

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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.