Home / 278,461.97-417,626.04-128,558.24

Finding the Fourth Proportional to 278,461.97, 417,626.04 and 128,558.24

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Solution

The fourth proportional to 278,461.97, 417,626.04 and 128,558.24 is: 192,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,461.97 : 417,626.04 = 128,558.24 : x
  2. Step 2: Convert to fraction form
    278,461.97/417,626.04 = 128,558.24/x
  3. Step 3: Cross multiply
    278,461.97x = 417,626.04 × 128,558.24
  4. Step 4: Simplify right side
    278,461.97x = 53,689,268,640.63
  5. Step 5: Solve for x
    x = 53,689,268,640.63/278,461.97
  6. Step 6: Final answer
    x = 192,806.47

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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.