Home / 255,731.04-383,639.46-78,196.44

Finding the Fourth Proportional to 255,731.04, 383,639.46 and 78,196.44

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Solution

The fourth proportional to 255,731.04, 383,639.46 and 78,196.44 is: 117,307.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,731.04 : 383,639.46 = 78,196.44 : x
  2. Step 2: Convert to fraction form
    255,731.04/383,639.46 = 78,196.44/x
  3. Step 3: Cross multiply
    255,731.04x = 383,639.46 × 78,196.44
  4. Step 4: Simplify right side
    255,731.04x = 29,999,240,015.52
  5. Step 5: Solve for x
    x = 29,999,240,015.52/255,731.04
  6. Step 6: Final answer
    x = 117,307.78

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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.