Home / 290,270.19-434,742.38-138,573.97

Finding the Fourth Proportional to 290,270.19, 434,742.38 and 138,573.97

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Solution

The fourth proportional to 290,270.19, 434,742.38 and 138,573.97 is: 207,544.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,270.19 : 434,742.38 = 138,573.97 : x
  2. Step 2: Convert to fraction form
    290,270.19/434,742.38 = 138,573.97/x
  3. Step 3: Cross multiply
    290,270.19x = 434,742.38 × 138,573.97
  4. Step 4: Simplify right side
    290,270.19x = 60,243,977,894.06
  5. Step 5: Solve for x
    x = 60,243,977,894.06/290,270.19
  6. Step 6: Final answer
    x = 207,544.49

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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.