Home / 285,093.09-393,426.18-157,775.67

Finding the Fourth Proportional to 285,093.09, 393,426.18 and 157,775.67

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Solution

The fourth proportional to 285,093.09, 393,426.18 and 157,775.67 is: 217,729.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,093.09 : 393,426.18 = 157,775.67 : x
  2. Step 2: Convert to fraction form
    285,093.09/393,426.18 = 157,775.67/x
  3. Step 3: Cross multiply
    285,093.09x = 393,426.18 × 157,775.67
  4. Step 4: Simplify right side
    285,093.09x = 62,073,079,145.04
  5. Step 5: Solve for x
    x = 62,073,079,145.04/285,093.09
  6. Step 6: Final answer
    x = 217,729.16

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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.