Home / 218,427.57-301,439.75-122,940.45

Finding the Fourth Proportional to 218,427.57, 301,439.75 and 122,940.45

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Solution

The fourth proportional to 218,427.57, 301,439.75 and 122,940.45 is: 169,663.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,427.57 : 301,439.75 = 122,940.45 : x
  2. Step 2: Convert to fraction form
    218,427.57/301,439.75 = 122,940.45/x
  3. Step 3: Cross multiply
    218,427.57x = 301,439.75 × 122,940.45
  4. Step 4: Simplify right side
    218,427.57x = 37,059,137,898.19
  5. Step 5: Solve for x
    x = 37,059,137,898.19/218,427.57
  6. Step 6: Final answer
    x = 169,663.28

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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.