Home / 279,117.36-385,291.42-197,870.26

Finding the Fourth Proportional to 279,117.36, 385,291.42 and 197,870.26

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Solution

The fourth proportional to 279,117.36, 385,291.42 and 197,870.26 is: 273,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,117.36 : 385,291.42 = 197,870.26 : x
  2. Step 2: Convert to fraction form
    279,117.36/385,291.42 = 197,870.26/x
  3. Step 3: Cross multiply
    279,117.36x = 385,291.42 × 197,870.26
  4. Step 4: Simplify right side
    279,117.36x = 76,237,713,451.17
  5. Step 5: Solve for x
    x = 76,237,713,451.17/279,117.36
  6. Step 6: Final answer
    x = 273,138.56

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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.