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Finding the Fourth Proportional to 290,487.94, 399,946.61 and 245,053.01

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Solution

The fourth proportional to 290,487.94, 399,946.61 and 245,053.01 is: 337,391.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,487.94 : 399,946.61 = 245,053.01 : x
  2. Step 2: Convert to fraction form
    290,487.94/399,946.61 = 245,053.01/x
  3. Step 3: Cross multiply
    290,487.94x = 399,946.61 × 245,053.01
  4. Step 4: Simplify right side
    290,487.94x = 98,008,122,232.30
  5. Step 5: Solve for x
    x = 98,008,122,232.30/290,487.94
  6. Step 6: Final answer
    x = 337,391.37

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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.