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Finding the Fourth Proportional to 218,395.13, 301,384.32 and 122,903.42

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Solution

The fourth proportional to 218,395.13, 301,384.32 and 122,903.42 is: 169,606.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,395.13 : 301,384.32 = 122,903.42 : x
  2. Step 2: Convert to fraction form
    218,395.13/301,384.32 = 122,903.42/x
  3. Step 3: Cross multiply
    218,395.13x = 301,384.32 × 122,903.42
  4. Step 4: Simplify right side
    218,395.13x = 37,041,163,662.37
  5. Step 5: Solve for x
    x = 37,041,163,662.37/218,395.13
  6. Step 6: Final answer
    x = 169,606.18

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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.