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Finding the Fourth Proportional to 483,135.60, 724,703.40 and 305,842.80

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Solution

The fourth proportional to 483,135.60, 724,703.40 and 305,842.80 is: 458,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,135.60 : 724,703.40 = 305,842.80 : x
  2. Step 2: Convert to fraction form
    483,135.60/724,703.40 = 305,842.80/x
  3. Step 3: Cross multiply
    483,135.60x = 724,703.40 × 305,842.80
  4. Step 4: Simplify right side
    483,135.60x = 221,645,317,025.52
  5. Step 5: Solve for x
    x = 221,645,317,025.52/483,135.60
  6. Step 6: Final answer
    x = 458,764.20

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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.