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Finding the Fourth Proportional to 379,722.48, 523,770.12 and 243,540.72

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Solution

The fourth proportional to 379,722.48, 523,770.12 and 243,540.72 is: 335,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,722.48 : 523,770.12 = 243,540.72 : x
  2. Step 2: Convert to fraction form
    379,722.48/523,770.12 = 243,540.72/x
  3. Step 3: Cross multiply
    379,722.48x = 523,770.12 × 243,540.72
  4. Step 4: Simplify right side
    379,722.48x = 127,559,352,139.29
  5. Step 5: Solve for x
    x = 127,559,352,139.29/379,722.48
  6. Step 6: Final answer
    x = 335,927.84

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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.