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Finding the Fourth Proportional to 356,879.81, 535,150.21 and 207,166.02

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Solution

The fourth proportional to 356,879.81, 535,150.21 and 207,166.02 is: 310,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,879.81 : 535,150.21 = 207,166.02 : x
  2. Step 2: Convert to fraction form
    356,879.81/535,150.21 = 207,166.02/x
  3. Step 3: Cross multiply
    356,879.81x = 535,150.21 × 207,166.02
  4. Step 4: Simplify right side
    356,879.81x = 110,864,939,107.86
  5. Step 5: Solve for x
    x = 110,864,939,107.86/356,879.81
  6. Step 6: Final answer
    x = 310,650.63

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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.