Home / 386,116.20-578,828.70-149,380.20

Finding the Fourth Proportional to 386,116.20, 578,828.70 and 149,380.20

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Solution

The fourth proportional to 386,116.20, 578,828.70 and 149,380.20 is: 223,936.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,116.20 : 578,828.70 = 149,380.20 : x
  2. Step 2: Convert to fraction form
    386,116.20/578,828.70 = 149,380.20/x
  3. Step 3: Cross multiply
    386,116.20x = 578,828.70 × 149,380.20
  4. Step 4: Simplify right side
    386,116.20x = 86,465,546,971.74
  5. Step 5: Solve for x
    x = 86,465,546,971.74/386,116.20
  6. Step 6: Final answer
    x = 223,936.59

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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.