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Finding the Fourth Proportional to 290,254.19, 435,348.27 and 100,679.49

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Solution

The fourth proportional to 290,254.19, 435,348.27 and 100,679.49 is: 151,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,254.19 : 435,348.27 = 100,679.49 : x
  2. Step 2: Convert to fraction form
    290,254.19/435,348.27 = 100,679.49/x
  3. Step 3: Cross multiply
    290,254.19x = 435,348.27 × 100,679.49
  4. Step 4: Simplify right side
    290,254.19x = 43,830,641,795.98
  5. Step 5: Solve for x
    x = 43,830,641,795.98/290,254.19
  6. Step 6: Final answer
    x = 151,007.79

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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.