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Finding the Fourth Proportional to 490,148.20, 735,222.30 and 157,724.20

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Solution

The fourth proportional to 490,148.20, 735,222.30 and 157,724.20 is: 236,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,148.20 : 735,222.30 = 157,724.20 : x
  2. Step 2: Convert to fraction form
    490,148.20/735,222.30 = 157,724.20/x
  3. Step 3: Cross multiply
    490,148.20x = 735,222.30 × 157,724.20
  4. Step 4: Simplify right side
    490,148.20x = 115,962,349,089.66
  5. Step 5: Solve for x
    x = 115,962,349,089.66/490,148.20
  6. Step 6: Final answer
    x = 236,586.30

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Similar ratio
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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.