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Finding the Fourth Proportional to 557,289.55, 835,670.79 and 215,892.88

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Solution

The fourth proportional to 557,289.55, 835,670.79 and 215,892.88 is: 323,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,289.55 : 835,670.79 = 215,892.88 : x
  2. Step 2: Convert to fraction form
    557,289.55/835,670.79 = 215,892.88/x
  3. Step 3: Cross multiply
    557,289.55x = 835,670.79 × 215,892.88
  4. Step 4: Simplify right side
    557,289.55x = 180,415,371,495.80
  5. Step 5: Solve for x
    x = 180,415,371,495.80/557,289.55
  6. Step 6: Final answer
    x = 323,737.22

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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.