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Finding the Fourth Proportional to 290,867.45, 435,989.86 and 140,901.89

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Solution

The fourth proportional to 290,867.45, 435,989.86 and 140,901.89 is: 211,202.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,867.45 : 435,989.86 = 140,901.89 : x
  2. Step 2: Convert to fraction form
    290,867.45/435,989.86 = 140,901.89/x
  3. Step 3: Cross multiply
    290,867.45x = 435,989.86 × 140,901.89
  4. Step 4: Simplify right side
    290,867.45x = 61,431,792,762.63
  5. Step 5: Solve for x
    x = 61,431,792,762.63/290,867.45
  6. Step 6: Final answer
    x = 211,202.02

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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.