Home / 285,438.96-393,900.84-158,111.88

Finding the Fourth Proportional to 285,438.96, 393,900.84 and 158,111.88

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Solution

The fourth proportional to 285,438.96, 393,900.84 and 158,111.88 is: 218,191.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,438.96 : 393,900.84 = 158,111.88 : x
  2. Step 2: Convert to fraction form
    285,438.96/393,900.84 = 158,111.88/x
  3. Step 3: Cross multiply
    285,438.96x = 393,900.84 × 158,111.88
  4. Step 4: Simplify right side
    285,438.96x = 62,280,402,345.98
  5. Step 5: Solve for x
    x = 62,280,402,345.98/285,438.96
  6. Step 6: Final answer
    x = 218,191.67

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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.