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Finding the Fourth Proportional to 351,703.04, 485,295.35 and 208,439.96

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Solution

The fourth proportional to 351,703.04, 485,295.35 and 208,439.96 is: 287,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,703.04 : 485,295.35 = 208,439.96 : x
  2. Step 2: Convert to fraction form
    351,703.04/485,295.35 = 208,439.96/x
  3. Step 3: Cross multiply
    351,703.04x = 485,295.35 × 208,439.96
  4. Step 4: Simplify right side
    351,703.04x = 101,154,939,873.51
  5. Step 5: Solve for x
    x = 101,154,939,873.51/351,703.04
  6. Step 6: Final answer
    x = 287,614.63

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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.