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Finding the Fourth Proportional to 274,220.40, 411,330.60 and 168,697.20

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Solution

The fourth proportional to 274,220.40, 411,330.60 and 168,697.20 is: 253,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,220.40 : 411,330.60 = 168,697.20 : x
  2. Step 2: Convert to fraction form
    274,220.40/411,330.60 = 168,697.20/x
  3. Step 3: Cross multiply
    274,220.40x = 411,330.60 × 168,697.20
  4. Step 4: Simplify right side
    274,220.40x = 69,390,320,494.32
  5. Step 5: Solve for x
    x = 69,390,320,494.32/274,220.40
  6. Step 6: Final answer
    x = 253,045.80

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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.