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Finding the Fourth Proportional to 305,335.81, 458,285.60 and 220,035.25

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Solution

The fourth proportional to 305,335.81, 458,285.60 and 220,035.25 is: 330,256.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,335.81 : 458,285.60 = 220,035.25 : x
  2. Step 2: Convert to fraction form
    305,335.81/458,285.60 = 220,035.25/x
  3. Step 3: Cross multiply
    305,335.81x = 458,285.60 × 220,035.25
  4. Step 4: Simplify right side
    305,335.81x = 100,838,986,567.40
  5. Step 5: Solve for x
    x = 100,838,986,567.40/305,335.81
  6. Step 6: Final answer
    x = 330,256.01

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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.