Home / 380,820.56-570,530.20-238,639.34

Finding the Fourth Proportional to 380,820.56, 570,530.20 and 238,639.34

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Solution

The fourth proportional to 380,820.56, 570,530.20 and 238,639.34 is: 357,519.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,820.56 : 570,530.20 = 238,639.34 : x
  2. Step 2: Convert to fraction form
    380,820.56/570,530.20 = 238,639.34/x
  3. Step 3: Cross multiply
    380,820.56x = 570,530.20 × 238,639.34
  4. Step 4: Simplify right side
    380,820.56x = 136,150,950,378.07
  5. Step 5: Solve for x
    x = 136,150,950,378.07/380,820.56
  6. Step 6: Final answer
    x = 357,519.96

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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.