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Finding the Fourth Proportional to 218,028, 300,895.48 and 130,816.37

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Solution

The fourth proportional to 218,028, 300,895.48 and 130,816.37 is: 180,536.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,028 : 300,895.48 = 130,816.37 : x
  2. Step 2: Convert to fraction form
    218,028/300,895.48 = 130,816.37/x
  3. Step 3: Cross multiply
    218,028x = 300,895.48 × 130,816.37
  4. Step 4: Simplify right side
    218,028x = 39,362,054,443.01
  5. Step 5: Solve for x
    x = 39,362,054,443.01/218,028
  6. Step 6: Final answer
    x = 180,536.69

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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.