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Finding the Fourth Proportional to 330,821.80, 496,491.90 and 153,350.80

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Solution

The fourth proportional to 330,821.80, 496,491.90 and 153,350.80 is: 230,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,821.80 : 496,491.90 = 153,350.80 : x
  2. Step 2: Convert to fraction form
    330,821.80/496,491.90 = 153,350.80/x
  3. Step 3: Cross multiply
    330,821.80x = 496,491.90 × 153,350.80
  4. Step 4: Simplify right side
    330,821.80x = 76,137,430,058.52
  5. Step 5: Solve for x
    x = 76,137,430,058.52/330,821.80
  6. Step 6: Final answer
    x = 230,146.35

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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.