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Finding the Fourth Proportional to 243,879.80, 365,819.70 and 103,620.20

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Solution

The fourth proportional to 243,879.80, 365,819.70 and 103,620.20 is: 155,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,879.80 : 365,819.70 = 103,620.20 : x
  2. Step 2: Convert to fraction form
    243,879.80/365,819.70 = 103,620.20/x
  3. Step 3: Cross multiply
    243,879.80x = 365,819.70 × 103,620.20
  4. Step 4: Simplify right side
    243,879.80x = 37,906,310,477.94
  5. Step 5: Solve for x
    x = 37,906,310,477.94/243,879.80
  6. Step 6: Final answer
    x = 155,430.30

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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.