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Finding the Fourth Proportional to 305,724.80, 458,630.40 and 95,340.80

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Solution

The fourth proportional to 305,724.80, 458,630.40 and 95,340.80 is: 143,024.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,724.80 : 458,630.40 = 95,340.80 : x
  2. Step 2: Convert to fraction form
    305,724.80/458,630.40 = 95,340.80/x
  3. Step 3: Cross multiply
    305,724.80x = 458,630.40 × 95,340.80
  4. Step 4: Simplify right side
    305,724.80x = 43,726,189,240.32
  5. Step 5: Solve for x
    x = 43,726,189,240.32/305,724.80
  6. Step 6: Final answer
    x = 143,024.67

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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.