Home / 391,113.36-539,736.54-212,265.36

Finding the Fourth Proportional to 391,113.36, 539,736.54 and 212,265.36

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Solution

The fourth proportional to 391,113.36, 539,736.54 and 212,265.36 is: 292,926.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,113.36 : 539,736.54 = 212,265.36 : x
  2. Step 2: Convert to fraction form
    391,113.36/539,736.54 = 212,265.36/x
  3. Step 3: Cross multiply
    391,113.36x = 539,736.54 × 212,265.36
  4. Step 4: Simplify right side
    391,113.36x = 114,567,370,968.25
  5. Step 5: Solve for x
    x = 114,567,370,968.25/391,113.36
  6. Step 6: Final answer
    x = 292,926.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.