Home / 255,628.20-383,438.70-115,386.60

Finding the Fourth Proportional to 255,628.20, 383,438.70 and 115,386.60

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Solution

The fourth proportional to 255,628.20, 383,438.70 and 115,386.60 is: 173,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,628.20 : 383,438.70 = 115,386.60 : x
  2. Step 2: Convert to fraction form
    255,628.20/383,438.70 = 115,386.60/x
  3. Step 3: Cross multiply
    255,628.20x = 383,438.70 × 115,386.60
  4. Step 4: Simplify right side
    255,628.20x = 44,243,687,901.42
  5. Step 5: Solve for x
    x = 44,243,687,901.42/255,628.20
  6. Step 6: Final answer
    x = 173,078.28

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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.