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Finding the Fourth Proportional to 505,140.48, 757,852.88 and 220,856.00

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Solution

The fourth proportional to 505,140.48, 757,852.88 and 220,856.00 is: 331,346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,140.48 : 757,852.88 = 220,856.00 : x
  2. Step 2: Convert to fraction form
    505,140.48/757,852.88 = 220,856.00/x
  3. Step 3: Cross multiply
    505,140.48x = 757,852.88 × 220,856.00
  4. Step 4: Simplify right side
    505,140.48x = 167,376,350,771.74
  5. Step 5: Solve for x
    x = 167,376,350,771.74/505,140.48
  6. Step 6: Final answer
    x = 331,346.15

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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.