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Finding the Fourth Proportional to 355,584.06, 490,665.70 and 210,394.29

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Solution

The fourth proportional to 355,584.06, 490,665.70 and 210,394.29 is: 290,320.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,584.06 : 490,665.70 = 210,394.29 : x
  2. Step 2: Convert to fraction form
    355,584.06/490,665.70 = 210,394.29/x
  3. Step 3: Cross multiply
    355,584.06x = 490,665.70 × 210,394.29
  4. Step 4: Simplify right side
    355,584.06x = 103,233,263,681.84
  5. Step 5: Solve for x
    x = 103,233,263,681.84/355,584.06
  6. Step 6: Final answer
    x = 290,320.28

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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.