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Finding the Fourth Proportional to 218,915.58, 302,104 and 118,313.58

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Solution

The fourth proportional to 218,915.58, 302,104 and 118,313.58 is: 163,273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,915.58 : 302,104 = 118,313.58 : x
  2. Step 2: Convert to fraction form
    218,915.58/302,104 = 118,313.58/x
  3. Step 3: Cross multiply
    218,915.58x = 302,104 × 118,313.58
  4. Step 4: Simplify right side
    218,915.58x = 35,743,005,772.32
  5. Step 5: Solve for x
    x = 35,743,005,772.32/218,915.58
  6. Step 6: Final answer
    x = 163,273.01

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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.