Home / 209,518.09-314,275.44-138,757.40

Finding the Fourth Proportional to 209,518.09, 314,275.44 and 138,757.40

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Solution

The fourth proportional to 209,518.09, 314,275.44 and 138,757.40 is: 208,134.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,518.09 : 314,275.44 = 138,757.40 : x
  2. Step 2: Convert to fraction form
    209,518.09/314,275.44 = 138,757.40/x
  3. Step 3: Cross multiply
    209,518.09x = 314,275.44 × 138,757.40
  4. Step 4: Simplify right side
    209,518.09x = 43,608,043,065.75
  5. Step 5: Solve for x
    x = 43,608,043,065.75/209,518.09
  6. Step 6: Final answer
    x = 208,134.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.