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Finding the Fourth Proportional to 303,786.60, 455,570.55 and 153,977.10

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Solution

The fourth proportional to 303,786.60, 455,570.55 and 153,977.10 is: 230,910.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,786.60 : 455,570.55 = 153,977.10 : x
  2. Step 2: Convert to fraction form
    303,786.60/455,570.55 = 153,977.10/x
  3. Step 3: Cross multiply
    303,786.60x = 455,570.55 × 153,977.10
  4. Step 4: Simplify right side
    303,786.60x = 70,147,432,134.41
  5. Step 5: Solve for x
    x = 70,147,432,134.41/303,786.60
  6. Step 6: Final answer
    x = 230,910.22

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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.