Home / 208,800.25-288,268.09-137,303.57

Finding the Fourth Proportional to 208,800.25, 288,268.09 and 137,303.57

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Solution

The fourth proportional to 208,800.25, 288,268.09 and 137,303.57 is: 189,560.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,800.25 : 288,268.09 = 137,303.57 : x
  2. Step 2: Convert to fraction form
    208,800.25/288,268.09 = 137,303.57/x
  3. Step 3: Cross multiply
    208,800.25x = 288,268.09 × 137,303.57
  4. Step 4: Simplify right side
    208,800.25x = 39,580,237,874.08
  5. Step 5: Solve for x
    x = 39,580,237,874.08/208,800.25
  6. Step 6: Final answer
    x = 189,560.30

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1.5x scale

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.