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Finding the Fourth Proportional to 290,735.20, 436,102.80 and 191,202.40

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Solution

The fourth proportional to 290,735.20, 436,102.80 and 191,202.40 is: 286,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,735.20 : 436,102.80 = 191,202.40 : x
  2. Step 2: Convert to fraction form
    290,735.20/436,102.80 = 191,202.40/x
  3. Step 3: Cross multiply
    290,735.20x = 436,102.80 × 191,202.40
  4. Step 4: Simplify right side
    290,735.20x = 83,383,902,006.72
  5. Step 5: Solve for x
    x = 83,383,902,006.72/290,735.20
  6. Step 6: Final answer
    x = 286,803.60

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1.5x scale

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.