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Finding the Fourth Proportional to 220,285.80, 330,428.70 and 158,077.80

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Solution

The fourth proportional to 220,285.80, 330,428.70 and 158,077.80 is: 237,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,285.80 : 330,428.70 = 158,077.80 : x
  2. Step 2: Convert to fraction form
    220,285.80/330,428.70 = 158,077.80/x
  3. Step 3: Cross multiply
    220,285.80x = 330,428.70 × 158,077.80
  4. Step 4: Simplify right side
    220,285.80x = 52,233,441,952.86
  5. Step 5: Solve for x
    x = 52,233,441,952.86/220,285.80
  6. Step 6: Final answer
    x = 237,116.70

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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.