Home / 380,260.89-570,952.05-212,109.75

Finding the Fourth Proportional to 380,260.89, 570,952.05 and 212,109.75

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Solution

The fourth proportional to 380,260.89, 570,952.05 and 212,109.75 is: 318,477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,260.89 : 570,952.05 = 212,109.75 : x
  2. Step 2: Convert to fraction form
    380,260.89/570,952.05 = 212,109.75/x
  3. Step 3: Cross multiply
    380,260.89x = 570,952.05 × 212,109.75
  4. Step 4: Simplify right side
    380,260.89x = 121,104,496,587.49
  5. Step 5: Solve for x
    x = 121,104,496,587.49/380,260.89
  6. Step 6: Final answer
    x = 318,477.39

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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.