Home / 218,421.34-301,441.79-127,771.55

Finding the Fourth Proportional to 218,421.34, 301,441.79 and 127,771.55

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Solution

The fourth proportional to 218,421.34, 301,441.79 and 127,771.55 is: 176,336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,421.34 : 301,441.79 = 127,771.55 : x
  2. Step 2: Convert to fraction form
    218,421.34/301,441.79 = 127,771.55/x
  3. Step 3: Cross multiply
    218,421.34x = 301,441.79 × 127,771.55
  4. Step 4: Simplify right side
    218,421.34x = 38,515,685,662.60
  5. Step 5: Solve for x
    x = 38,515,685,662.60/218,421.34
  6. Step 6: Final answer
    x = 176,336.64

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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.