Home / 205,623.40-308,435.10-122,679.40

Finding the Fourth Proportional to 205,623.40, 308,435.10 and 122,679.40

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Solution

The fourth proportional to 205,623.40, 308,435.10 and 122,679.40 is: 184,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,623.40 : 308,435.10 = 122,679.40 : x
  2. Step 2: Convert to fraction form
    205,623.40/308,435.10 = 122,679.40/x
  3. Step 3: Cross multiply
    205,623.40x = 308,435.10 × 122,679.40
  4. Step 4: Simplify right side
    205,623.40x = 37,838,633,006.94
  5. Step 5: Solve for x
    x = 37,838,633,006.94/205,623.40
  6. Step 6: Final answer
    x = 184,019.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.