Home / 223,686.36-308,694.44-128,211.05

Finding the Fourth Proportional to 223,686.36, 308,694.44 and 128,211.05

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Solution

The fourth proportional to 223,686.36, 308,694.44 and 128,211.05 is: 176,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,686.36 : 308,694.44 = 128,211.05 : x
  2. Step 2: Convert to fraction form
    223,686.36/308,694.44 = 128,211.05/x
  3. Step 3: Cross multiply
    223,686.36x = 308,694.44 × 128,211.05
  4. Step 4: Simplify right side
    223,686.36x = 39,578,039,373.83
  5. Step 5: Solve for x
    x = 39,578,039,373.83/223,686.36
  6. Step 6: Final answer
    x = 176,935.42

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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.