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Finding the Fourth Proportional to 519,635.02, 717,082.54 and 290,185.96

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Solution

The fourth proportional to 519,635.02, 717,082.54 and 290,185.96 is: 400,448.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,635.02 : 717,082.54 = 290,185.96 : x
  2. Step 2: Convert to fraction form
    519,635.02/717,082.54 = 290,185.96/x
  3. Step 3: Cross multiply
    519,635.02x = 717,082.54 × 290,185.96
  4. Step 4: Simplify right side
    519,635.02x = 208,087,285,269.14
  5. Step 5: Solve for x
    x = 208,087,285,269.14/519,635.02
  6. Step 6: Final answer
    x = 400,448.93

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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.