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Finding the Fourth Proportional to 218,759.50, 301,888.31 and 118,157.50

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Solution

The fourth proportional to 218,759.50, 301,888.31 and 118,157.50 is: 163,057.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,759.50 : 301,888.31 = 118,157.50 : x
  2. Step 2: Convert to fraction form
    218,759.50/301,888.31 = 118,157.50/x
  3. Step 3: Cross multiply
    218,759.50x = 301,888.31 × 118,157.50
  4. Step 4: Simplify right side
    218,759.50x = 35,670,367,988.83
  5. Step 5: Solve for x
    x = 35,670,367,988.83/218,759.50
  6. Step 6: Final answer
    x = 163,057.46

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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.