Home / 290,215.98-435,492.05-121,721.27

Finding the Fourth Proportional to 290,215.98, 435,492.05 and 121,721.27

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Solution

The fourth proportional to 290,215.98, 435,492.05 and 121,721.27 is: 182,652.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,215.98 : 435,492.05 = 121,721.27 : x
  2. Step 2: Convert to fraction form
    290,215.98/435,492.05 = 121,721.27/x
  3. Step 3: Cross multiply
    290,215.98x = 435,492.05 × 121,721.27
  4. Step 4: Simplify right side
    290,215.98x = 53,008,642,614.84
  5. Step 5: Solve for x
    x = 53,008,642,614.84/290,215.98
  6. Step 6: Final answer
    x = 182,652.39

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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.