Home / 305,872.02-458,890.45-128,331.36

Finding the Fourth Proportional to 305,872.02, 458,890.45 and 128,331.36

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Solution

The fourth proportional to 305,872.02, 458,890.45 and 128,331.36 is: 192,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,872.02 : 458,890.45 = 128,331.36 : x
  2. Step 2: Convert to fraction form
    305,872.02/458,890.45 = 128,331.36/x
  3. Step 3: Cross multiply
    305,872.02x = 458,890.45 × 128,331.36
  4. Step 4: Simplify right side
    305,872.02x = 58,890,035,218.68
  5. Step 5: Solve for x
    x = 58,890,035,218.68/305,872.02
  6. Step 6: Final answer
    x = 192,531.62

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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.