Home / 221,288.24-305,374.44-120,686.24

Finding the Fourth Proportional to 221,288.24, 305,374.44 and 120,686.24

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Solution

The fourth proportional to 221,288.24, 305,374.44 and 120,686.24 is: 166,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,288.24 : 305,374.44 = 120,686.24 : x
  2. Step 2: Convert to fraction form
    221,288.24/305,374.44 = 120,686.24/x
  3. Step 3: Cross multiply
    221,288.24x = 305,374.44 × 120,686.24
  4. Step 4: Simplify right side
    221,288.24x = 36,854,492,955.71
  5. Step 5: Solve for x
    x = 36,854,492,955.71/221,288.24
  6. Step 6: Final answer
    x = 166,545.19

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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.