Home / 305,577.45-458,530.20-128,102.40

Finding the Fourth Proportional to 305,577.45, 458,530.20 and 128,102.40

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Solution

The fourth proportional to 305,577.45, 458,530.20 and 128,102.40 is: 192,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,577.45 : 458,530.20 = 128,102.40 : x
  2. Step 2: Convert to fraction form
    305,577.45/458,530.20 = 128,102.40/x
  3. Step 3: Cross multiply
    305,577.45x = 458,530.20 × 128,102.40
  4. Step 4: Simplify right side
    305,577.45x = 58,738,819,092.48
  5. Step 5: Solve for x
    x = 58,738,819,092.48/305,577.45
  6. Step 6: Final answer
    x = 192,222.36

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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.