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Finding the Fourth Proportional to 490,013.40, 735,020.10 and 157,589.40

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Solution

The fourth proportional to 490,013.40, 735,020.10 and 157,589.40 is: 236,384.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,013.40 : 735,020.10 = 157,589.40 : x
  2. Step 2: Convert to fraction form
    490,013.40/735,020.10 = 157,589.40/x
  3. Step 3: Cross multiply
    490,013.40x = 735,020.10 × 157,589.40
  4. Step 4: Simplify right side
    490,013.40x = 115,831,376,546.94
  5. Step 5: Solve for x
    x = 115,831,376,546.94/490,013.40
  6. Step 6: Final answer
    x = 236,384.10

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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.