Home / 287,811,144.30-431,716,790.27-80,580,085.34

Finding the Fourth Proportional to 287,811,144.30, 431,716,790.27 and 80,580,085.34

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Solution

The fourth proportional to 287,811,144.30, 431,716,790.27 and 80,580,085.34 is: 120,870,148.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,811,144.30 : 431,716,790.27 = 80,580,085.34 : x
  2. Step 2: Convert to fraction form
    287,811,144.30/431,716,790.27 = 80,580,085.34/x
  3. Step 3: Cross multiply
    287,811,144.30x = 431,716,790.27 × 80,580,085.34
  4. Step 4: Simplify right side
    287,811,144.30x = 34,787,775,800,105,992
  5. Step 5: Solve for x
    x = 34,787,775,800,105,992/287,811,144.30
  6. Step 6: Final answer
    x = 120,870,148.67

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1.5x scale

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.