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Finding the Fourth Proportional to 303,474.80, 455,491.76 and 153,821.23

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Solution

The fourth proportional to 303,474.80, 455,491.76 and 153,821.23 is: 230,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,474.80 : 455,491.76 = 153,821.23 : x
  2. Step 2: Convert to fraction form
    303,474.80/455,491.76 = 153,821.23/x
  3. Step 3: Cross multiply
    303,474.80x = 455,491.76 × 153,821.23
  4. Step 4: Simplify right side
    303,474.80x = 70,064,300,870.23
  5. Step 5: Solve for x
    x = 70,064,300,870.23/303,474.80
  6. Step 6: Final answer
    x = 230,873.54

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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.