Home / 208,928.09-288,317.80-113,438.45

Finding the Fourth Proportional to 208,928.09, 288,317.80 and 113,438.45

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Solution

The fourth proportional to 208,928.09, 288,317.80 and 113,438.45 is: 156,543.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,928.09 : 288,317.80 = 113,438.45 : x
  2. Step 2: Convert to fraction form
    208,928.09/288,317.80 = 113,438.45/x
  3. Step 3: Cross multiply
    208,928.09x = 288,317.80 × 113,438.45
  4. Step 4: Simplify right side
    208,928.09x = 32,706,325,202.00
  5. Step 5: Solve for x
    x = 32,706,325,202.00/208,928.09
  6. Step 6: Final answer
    x = 156,543.45

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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.