Home / 208,917.36-288,323.80-118,289.30

Finding the Fourth Proportional to 208,917.36, 288,323.80 and 118,289.30

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Solution

The fourth proportional to 208,917.36, 288,323.80 and 118,289.30 is: 163,249.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,917.36 : 288,323.80 = 118,289.30 : x
  2. Step 2: Convert to fraction form
    208,917.36/288,323.80 = 118,289.30/x
  3. Step 3: Cross multiply
    208,917.36x = 288,323.80 × 118,289.30
  4. Step 4: Simplify right side
    208,917.36x = 34,105,620,475.34
  5. Step 5: Solve for x
    x = 34,105,620,475.34/208,917.36
  6. Step 6: Final answer
    x = 163,249.34

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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.