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Finding the Fourth Proportional to 552,888.91, 762,904.43 and 311,157.10

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Solution

The fourth proportional to 552,888.91, 762,904.43 and 311,157.10 is: 429,350.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,888.91 : 762,904.43 = 311,157.10 : x
  2. Step 2: Convert to fraction form
    552,888.91/762,904.43 = 311,157.10/x
  3. Step 3: Cross multiply
    552,888.91x = 762,904.43 × 311,157.10
  4. Step 4: Simplify right side
    552,888.91x = 237,383,128,460.17
  5. Step 5: Solve for x
    x = 237,383,128,460.17/552,888.91
  6. Step 6: Final answer
    x = 429,350.50

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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.