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Finding the Fourth Proportional to 255,743.37, 383,622.35 and 78,246.45

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Solution

The fourth proportional to 255,743.37, 383,622.35 and 78,246.45 is: 117,371.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,743.37 : 383,622.35 = 78,246.45 : x
  2. Step 2: Convert to fraction form
    255,743.37/383,622.35 = 78,246.45/x
  3. Step 3: Cross multiply
    255,743.37x = 383,622.35 × 78,246.45
  4. Step 4: Simplify right side
    255,743.37x = 30,017,086,636.93
  5. Step 5: Solve for x
    x = 30,017,086,636.93/255,743.37
  6. Step 6: Final answer
    x = 117,371.91

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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.