Home / 209,319.42-288,873.39-123,335.70

Finding the Fourth Proportional to 209,319.42, 288,873.39 and 123,335.70

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Solution

The fourth proportional to 209,319.42, 288,873.39 and 123,335.70 is: 170,210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,319.42 : 288,873.39 = 123,335.70 : x
  2. Step 2: Convert to fraction form
    209,319.42/288,873.39 = 123,335.70/x
  3. Step 3: Cross multiply
    209,319.42x = 288,873.39 × 123,335.70
  4. Step 4: Simplify right side
    209,319.42x = 35,628,401,767.02
  5. Step 5: Solve for x
    x = 35,628,401,767.02/209,319.42
  6. Step 6: Final answer
    x = 170,210.68

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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.