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Finding the Fourth Proportional to 355,792.84, 490,984.70 and 210,606.11

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Solution

The fourth proportional to 355,792.84, 490,984.70 and 210,606.11 is: 290,630.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,792.84 : 490,984.70 = 210,606.11 : x
  2. Step 2: Convert to fraction form
    355,792.84/490,984.70 = 210,606.11/x
  3. Step 3: Cross multiply
    355,792.84x = 490,984.70 × 210,606.11
  4. Step 4: Simplify right side
    355,792.84x = 103,404,377,736.52
  5. Step 5: Solve for x
    x = 103,404,377,736.52/355,792.84
  6. Step 6: Final answer
    x = 290,630.86

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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.