Home / 255,219.02-383,065.35-128,947.95

Finding the Fourth Proportional to 255,219.02, 383,065.35 and 128,947.95

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Solution

The fourth proportional to 255,219.02, 383,065.35 and 128,947.95 is: 193,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,219.02 : 383,065.35 = 128,947.95 : x
  2. Step 2: Convert to fraction form
    255,219.02/383,065.35 = 128,947.95/x
  3. Step 3: Cross multiply
    255,219.02x = 383,065.35 × 128,947.95
  4. Step 4: Simplify right side
    255,219.02x = 49,395,491,598.53
  5. Step 5: Solve for x
    x = 49,395,491,598.53/255,219.02
  6. Step 6: Final answer
    x = 193,541.58

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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.