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Finding the Fourth Proportional to 203,423.60, 305,130.60 and 55,679.60

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Solution

The fourth proportional to 203,423.60, 305,130.60 and 55,679.60 is: 83,518.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,423.60 : 305,130.60 = 55,679.60 : x
  2. Step 2: Convert to fraction form
    203,423.60/305,130.60 = 55,679.60/x
  3. Step 3: Cross multiply
    203,423.60x = 305,130.60 × 55,679.60
  4. Step 4: Simplify right side
    203,423.60x = 16,989,549,755.76
  5. Step 5: Solve for x
    x = 16,989,549,755.76/203,423.60
  6. Step 6: Final answer
    x = 83,518.09

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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.