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Finding the Fourth Proportional to 303,647.81, 455,109.37 and 141,323.43

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Solution

The fourth proportional to 303,647.81, 455,109.37 and 141,323.43 is: 211,816.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,647.81 : 455,109.37 = 141,323.43 : x
  2. Step 2: Convert to fraction form
    303,647.81/455,109.37 = 141,323.43/x
  3. Step 3: Cross multiply
    303,647.81x = 455,109.37 × 141,323.43
  4. Step 4: Simplify right side
    303,647.81x = 64,317,617,193.54
  5. Step 5: Solve for x
    x = 64,317,617,193.54/303,647.81
  6. Step 6: Final answer
    x = 211,816.50

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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.