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Finding the Fourth Proportional to 648,471.60, 972,853.20 and 199,213.20

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Solution

The fourth proportional to 648,471.60, 972,853.20 and 199,213.20 is: 298,864.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,471.60 : 972,853.20 = 199,213.20 : x
  2. Step 2: Convert to fraction form
    648,471.60/972,853.20 = 199,213.20/x
  3. Step 3: Cross multiply
    648,471.60x = 972,853.20 × 199,213.20
  4. Step 4: Simplify right side
    648,471.60x = 193,805,199,102.24
  5. Step 5: Solve for x
    x = 193,805,199,102.24/648,471.60
  6. Step 6: Final answer
    x = 298,864.59

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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.