Home / 388,927.60-582,469.80-239,628.40

Finding the Fourth Proportional to 388,927.60, 582,469.80 and 239,628.40

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Solution

The fourth proportional to 388,927.60, 582,469.80 and 239,628.40 is: 358,874.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,927.60 : 582,469.80 = 239,628.40 : x
  2. Step 2: Convert to fraction form
    388,927.60/582,469.80 = 239,628.40/x
  3. Step 3: Cross multiply
    388,927.60x = 582,469.80 × 239,628.40
  4. Step 4: Simplify right side
    388,927.60x = 139,576,306,222.32
  5. Step 5: Solve for x
    x = 139,576,306,222.32/388,927.60
  6. Step 6: Final answer
    x = 358,874.78

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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.