Home / 279,628.07-385,754.81-189,015.66

Finding the Fourth Proportional to 279,628.07, 385,754.81 and 189,015.66

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Solution

The fourth proportional to 279,628.07, 385,754.81 and 189,015.66 is: 260,752.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,628.07 : 385,754.81 = 189,015.66 : x
  2. Step 2: Convert to fraction form
    279,628.07/385,754.81 = 189,015.66/x
  3. Step 3: Cross multiply
    279,628.07x = 385,754.81 × 189,015.66
  4. Step 4: Simplify right side
    279,628.07x = 72,913,699,065.25
  5. Step 5: Solve for x
    x = 72,913,699,065.25/279,628.07
  6. Step 6: Final answer
    x = 260,752.44

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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.