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Finding the Fourth Proportional to 357,879.72, 536,485.86 and 121,057.59

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Solution

The fourth proportional to 357,879.72, 536,485.86 and 121,057.59 is: 181,473.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,879.72 : 536,485.86 = 121,057.59 : x
  2. Step 2: Convert to fraction form
    357,879.72/536,485.86 = 121,057.59/x
  3. Step 3: Cross multiply
    357,879.72x = 536,485.86 × 121,057.59
  4. Step 4: Simplify right side
    357,879.72x = 64,945,685,280.68
  5. Step 5: Solve for x
    x = 64,945,685,280.68/357,879.72
  6. Step 6: Final answer
    x = 181,473.50

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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.