Home / 218,489.12-301,510.34-121,692.67

Finding the Fourth Proportional to 218,489.12, 301,510.34 and 121,692.67

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Solution

The fourth proportional to 218,489.12, 301,510.34 and 121,692.67 is: 167,933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,489.12 : 301,510.34 = 121,692.67 : x
  2. Step 2: Convert to fraction form
    218,489.12/301,510.34 = 121,692.67/x
  3. Step 3: Cross multiply
    218,489.12x = 301,510.34 × 121,692.67
  4. Step 4: Simplify right side
    218,489.12x = 36,691,598,307.21
  5. Step 5: Solve for x
    x = 36,691,598,307.21/218,489.12
  6. Step 6: Final answer
    x = 167,933.30

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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.