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Finding the Fourth Proportional to 195,999.52, 270,471.36 and 115,430.40

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Solution

The fourth proportional to 195,999.52, 270,471.36 and 115,430.40 is: 159,289.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,999.52 : 270,471.36 = 115,430.40 : x
  2. Step 2: Convert to fraction form
    195,999.52/270,471.36 = 115,430.40/x
  3. Step 3: Cross multiply
    195,999.52x = 270,471.36 × 115,430.40
  4. Step 4: Simplify right side
    195,999.52x = 31,220,617,273.34
  5. Step 5: Solve for x
    x = 31,220,617,273.34/195,999.52
  6. Step 6: Final answer
    x = 159,289.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.