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Finding the Fourth Proportional to 214,108.40, 320,855.40 and 157,506.80

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Solution

The fourth proportional to 214,108.40, 320,855.40 and 157,506.80 is: 236,034.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,108.40 : 320,855.40 = 157,506.80 : x
  2. Step 2: Convert to fraction form
    214,108.40/320,855.40 = 157,506.80/x
  3. Step 3: Cross multiply
    214,108.40x = 320,855.40 × 157,506.80
  4. Step 4: Simplify right side
    214,108.40x = 50,536,907,316.72
  5. Step 5: Solve for x
    x = 50,536,907,316.72/214,108.40
  6. Step 6: Final answer
    x = 236,034.21

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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.