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Finding the Fourth Proportional to 309,327.86, 426,852.24 and 181,978.85

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Solution

The fourth proportional to 309,327.86, 426,852.24 and 181,978.85 is: 251,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,327.86 : 426,852.24 = 181,978.85 : x
  2. Step 2: Convert to fraction form
    309,327.86/426,852.24 = 181,978.85/x
  3. Step 3: Cross multiply
    309,327.86x = 426,852.24 × 181,978.85
  4. Step 4: Simplify right side
    309,327.86x = 77,678,079,755.12
  5. Step 5: Solve for x
    x = 77,678,079,755.12/309,327.86
  6. Step 6: Final answer
    x = 251,118.93

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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.