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Finding the Fourth Proportional to 290,840.40, 436,289.40 and 101,271.60

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Solution

The fourth proportional to 290,840.40, 436,289.40 and 101,271.60 is: 151,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,840.40 : 436,289.40 = 101,271.60 : x
  2. Step 2: Convert to fraction form
    290,840.40/436,289.40 = 101,271.60/x
  3. Step 3: Cross multiply
    290,840.40x = 436,289.40 × 101,271.60
  4. Step 4: Simplify right side
    290,840.40x = 44,183,725,601.04
  5. Step 5: Solve for x
    x = 44,183,725,601.04/290,840.40
  6. Step 6: Final answer
    x = 151,917.43

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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.