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Finding the Fourth Proportional to 218,725.31, 301,840.85 and 118,123.31

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Solution

The fourth proportional to 218,725.31, 301,840.85 and 118,123.31 is: 163,010.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,725.31 : 301,840.85 = 118,123.31 : x
  2. Step 2: Convert to fraction form
    218,725.31/301,840.85 = 118,123.31/x
  3. Step 3: Cross multiply
    218,725.31x = 301,840.85 × 118,123.31
  4. Step 4: Simplify right side
    218,725.31x = 35,654,439,081.32
  5. Step 5: Solve for x
    x = 35,654,439,081.32/218,725.31
  6. Step 6: Final answer
    x = 163,010.12

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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.