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Finding the Fourth Proportional to 255,574.28, 383,436.57 and 75,664.28

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Solution

The fourth proportional to 255,574.28, 383,436.57 and 75,664.28 is: 113,518.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,574.28 : 383,436.57 = 75,664.28 : x
  2. Step 2: Convert to fraction form
    255,574.28/383,436.57 = 75,664.28/x
  3. Step 3: Cross multiply
    255,574.28x = 383,436.57 × 75,664.28
  4. Step 4: Simplify right side
    255,574.28x = 29,012,451,994.72
  5. Step 5: Solve for x
    x = 29,012,451,994.72/255,574.28
  6. Step 6: Final answer
    x = 113,518.67

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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.