Home / 278,880.09-384,856.97-151,555.71

Finding the Fourth Proportional to 278,880.09, 384,856.97 and 151,555.71

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Solution

The fourth proportional to 278,880.09, 384,856.97 and 151,555.71 is: 209,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,880.09 : 384,856.97 = 151,555.71 : x
  2. Step 2: Convert to fraction form
    278,880.09/384,856.97 = 151,555.71/x
  3. Step 3: Cross multiply
    278,880.09x = 384,856.97 × 151,555.71
  4. Step 4: Simplify right side
    278,880.09x = 58,327,270,579.02
  5. Step 5: Solve for x
    x = 58,327,270,579.02/278,880.09
  6. Step 6: Final answer
    x = 209,148.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.