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Finding the Fourth Proportional to 290,636.70, 435,549.03 and 140,837.25

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Solution

The fourth proportional to 290,636.70, 435,549.03 and 140,837.25 is: 211,059.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,636.70 : 435,549.03 = 140,837.25 : x
  2. Step 2: Convert to fraction form
    290,636.70/435,549.03 = 140,837.25/x
  3. Step 3: Cross multiply
    290,636.70x = 435,549.03 × 140,837.25
  4. Step 4: Simplify right side
    290,636.70x = 61,341,527,625.37
  5. Step 5: Solve for x
    x = 61,341,527,625.37/290,636.70
  6. Step 6: Final answer
    x = 211,059.13

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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.