Home / 328,534.40-492,801.60-128,861.30

Finding the Fourth Proportional to 328,534.40, 492,801.60 and 128,861.30

Calculator

Solution

The fourth proportional to 328,534.40, 492,801.60 and 128,861.30 is: 193,291.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,534.40 : 492,801.60 = 128,861.30 : x
  2. Step 2: Convert to fraction form
    328,534.40/492,801.60 = 128,861.30/x
  3. Step 3: Cross multiply
    328,534.40x = 492,801.60 × 128,861.30
  4. Step 4: Simplify right side
    328,534.40x = 63,503,054,818.08
  5. Step 5: Solve for x
    x = 63,503,054,818.08/328,534.40
  6. Step 6: Final answer
    x = 193,291.95

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.