Home / 309,289.50-426,820.32-180,304.56

Finding the Fourth Proportional to 309,289.50, 426,820.32 and 180,304.56

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Solution

The fourth proportional to 309,289.50, 426,820.32 and 180,304.56 is: 248,820.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,289.50 : 426,820.32 = 180,304.56 : x
  2. Step 2: Convert to fraction form
    309,289.50/426,820.32 = 180,304.56/x
  3. Step 3: Cross multiply
    309,289.50x = 426,820.32 × 180,304.56
  4. Step 4: Simplify right side
    309,289.50x = 76,957,649,996.66
  5. Step 5: Solve for x
    x = 76,957,649,996.66/309,289.50
  6. Step 6: Final answer
    x = 248,820.77

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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.