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Finding the Fourth Proportional to 505,760.85, 758,670.50 and 190,220.49

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Solution

The fourth proportional to 505,760.85, 758,670.50 and 190,220.49 is: 285,341.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,760.85 : 758,670.50 = 190,220.49 : x
  2. Step 2: Convert to fraction form
    505,760.85/758,670.50 = 190,220.49/x
  3. Step 3: Cross multiply
    505,760.85x = 758,670.50 × 190,220.49
  4. Step 4: Simplify right side
    505,760.85x = 144,314,674,258.55
  5. Step 5: Solve for x
    x = 144,314,674,258.55/505,760.85
  6. Step 6: Final answer
    x = 285,341.73

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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.