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Finding the Fourth Proportional to 290,729.52, 436,263.48 and 122,237.64

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Solution

The fourth proportional to 290,729.52, 436,263.48 and 122,237.64 is: 183,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,729.52 : 436,263.48 = 122,237.64 : x
  2. Step 2: Convert to fraction form
    290,729.52/436,263.48 = 122,237.64/x
  3. Step 3: Cross multiply
    290,729.52x = 436,263.48 × 122,237.64
  4. Step 4: Simplify right side
    290,729.52x = 53,327,818,213.39
  5. Step 5: Solve for x
    x = 53,327,818,213.39/290,729.52
  6. Step 6: Final answer
    x = 183,427.60

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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.