Home / 380,261.89-570,953.55-212,110.75

Finding the Fourth Proportional to 380,261.89, 570,953.55 and 212,110.75

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Solution

The fourth proportional to 380,261.89, 570,953.55 and 212,110.75 is: 318,478.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,261.89 : 570,953.55 = 212,110.75 : x
  2. Step 2: Convert to fraction form
    380,261.89/570,953.55 = 212,110.75/x
  3. Step 3: Cross multiply
    380,261.89x = 570,953.55 × 212,110.75
  4. Step 4: Simplify right side
    380,261.89x = 121,105,385,705.66
  5. Step 5: Solve for x
    x = 121,105,385,705.66/380,261.89
  6. Step 6: Final answer
    x = 318,478.89

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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.