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Finding the Fourth Proportional to 248,416.16, 342,769.16 and 140,990.72

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Solution

The fourth proportional to 248,416.16, 342,769.16 and 140,990.72 is: 194,541.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,416.16 : 342,769.16 = 140,990.72 : x
  2. Step 2: Convert to fraction form
    248,416.16/342,769.16 = 140,990.72/x
  3. Step 3: Cross multiply
    248,416.16x = 342,769.16 × 140,990.72
  4. Step 4: Simplify right side
    248,416.16x = 48,327,270,662.20
  5. Step 5: Solve for x
    x = 48,327,270,662.20/248,416.16
  6. Step 6: Final answer
    x = 194,541.57

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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.