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Finding the Fourth Proportional to 319,372.56, 440,719.20 and 183,312

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Solution

The fourth proportional to 319,372.56, 440,719.20 and 183,312 is: 252,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,372.56 : 440,719.20 = 183,312 : x
  2. Step 2: Convert to fraction form
    319,372.56/440,719.20 = 183,312/x
  3. Step 3: Cross multiply
    319,372.56x = 440,719.20 × 183,312
  4. Step 4: Simplify right side
    319,372.56x = 80,789,117,990.40
  5. Step 5: Solve for x
    x = 80,789,117,990.40/319,372.56
  6. Step 6: Final answer
    x = 252,961.99

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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.