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Finding the Fourth Proportional to 351,694.04, 485,282.95 and 208,430.96

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Solution

The fourth proportional to 351,694.04, 485,282.95 and 208,430.96 is: 287,602.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,694.04 : 485,282.95 = 208,430.96 : x
  2. Step 2: Convert to fraction form
    351,694.04/485,282.95 = 208,430.96/x
  3. Step 3: Cross multiply
    351,694.04x = 485,282.95 × 208,430.96
  4. Step 4: Simplify right side
    351,694.04x = 101,147,988,192.64
  5. Step 5: Solve for x
    x = 101,147,988,192.64/351,694.04
  6. Step 6: Final answer
    x = 287,602.23

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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.