Home / 380,253.75-570,941.36-212,102.61

Finding the Fourth Proportional to 380,253.75, 570,941.36 and 212,102.61

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Solution

The fourth proportional to 380,253.75, 570,941.36 and 212,102.61 is: 318,466.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,253.75 : 570,941.36 = 212,102.61 : x
  2. Step 2: Convert to fraction form
    380,253.75/570,941.36 = 212,102.61/x
  3. Step 3: Cross multiply
    380,253.75x = 570,941.36 × 212,102.61
  4. Step 4: Simplify right side
    380,253.75x = 121,098,151,552.44
  5. Step 5: Solve for x
    x = 121,098,151,552.44/380,253.75
  6. Step 6: Final answer
    x = 318,466.69

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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.