Home / 208,979.93-288,389.77-113,487.31

Finding the Fourth Proportional to 208,979.93, 288,389.77 and 113,487.31

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Solution

The fourth proportional to 208,979.93, 288,389.77 and 113,487.31 is: 156,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,979.93 : 288,389.77 = 113,487.31 : x
  2. Step 2: Convert to fraction form
    208,979.93/288,389.77 = 113,487.31/x
  3. Step 3: Cross multiply
    208,979.93x = 288,389.77 × 113,487.31
  4. Step 4: Simplify right side
    208,979.93x = 32,728,579,228.82
  5. Step 5: Solve for x
    x = 32,728,579,228.82/208,979.93
  6. Step 6: Final answer
    x = 156,611.11

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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.