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Finding the Fourth Proportional to 290,287.90, 435,459.33 and 112,808.60

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Solution

The fourth proportional to 290,287.90, 435,459.33 and 112,808.60 is: 169,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,287.90 : 435,459.33 = 112,808.60 : x
  2. Step 2: Convert to fraction form
    290,287.90/435,459.33 = 112,808.60/x
  3. Step 3: Cross multiply
    290,287.90x = 435,459.33 × 112,808.60
  4. Step 4: Simplify right side
    290,287.90x = 49,123,555,196.94
  5. Step 5: Solve for x
    x = 49,123,555,196.94/290,287.90
  6. Step 6: Final answer
    x = 169,223.57

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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.