Home / 283,705.20-391,510.69-154,643.72

Finding the Fourth Proportional to 283,705.20, 391,510.69 and 154,643.72

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Solution

The fourth proportional to 283,705.20, 391,510.69 and 154,643.72 is: 213,406.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,705.20 : 391,510.69 = 154,643.72 : x
  2. Step 2: Convert to fraction form
    283,705.20/391,510.69 = 154,643.72/x
  3. Step 3: Cross multiply
    283,705.20x = 391,510.69 × 154,643.72
  4. Step 4: Simplify right side
    283,705.20x = 60,544,667,177.20
  5. Step 5: Solve for x
    x = 60,544,667,177.20/283,705.20
  6. Step 6: Final answer
    x = 213,406.97

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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.