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Finding the Fourth Proportional to 159,620.40, 239,430.60 and 157,287.60

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Solution

The fourth proportional to 159,620.40, 239,430.60 and 157,287.60 is: 235,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,620.40 : 239,430.60 = 157,287.60 : x
  2. Step 2: Convert to fraction form
    159,620.40/239,430.60 = 157,287.60/x
  3. Step 3: Cross multiply
    159,620.40x = 239,430.60 × 157,287.60
  4. Step 4: Simplify right side
    159,620.40x = 37,659,464,440.56
  5. Step 5: Solve for x
    x = 37,659,464,440.56/159,620.40
  6. Step 6: Final answer
    x = 235,931.40

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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.