Home / 290,253.91-435,549-121,759.18

Finding the Fourth Proportional to 290,253.91, 435,549 and 121,759.18

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Solution

The fourth proportional to 290,253.91, 435,549 and 121,759.18 is: 182,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,253.91 : 435,549 = 121,759.18 : x
  2. Step 2: Convert to fraction form
    290,253.91/435,549 = 121,759.18/x
  3. Step 3: Cross multiply
    290,253.91x = 435,549 × 121,759.18
  4. Step 4: Simplify right side
    290,253.91x = 53,032,089,089.82
  5. Step 5: Solve for x
    x = 53,032,089,089.82/290,253.91
  6. Step 6: Final answer
    x = 182,709.30

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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.