Home / 278,059.09-416,838.94-128,222.86

Finding the Fourth Proportional to 278,059.09, 416,838.94 and 128,222.86

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Solution

The fourth proportional to 278,059.09, 416,838.94 and 128,222.86 is: 192,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,059.09 : 416,838.94 = 128,222.86 : x
  2. Step 2: Convert to fraction form
    278,059.09/416,838.94 = 128,222.86/x
  3. Step 3: Cross multiply
    278,059.09x = 416,838.94 × 128,222.86
  4. Step 4: Simplify right side
    278,059.09x = 53,448,281,046.17
  5. Step 5: Solve for x
    x = 53,448,281,046.17/278,059.09
  6. Step 6: Final answer
    x = 192,219.15

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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.