Home / 278,928.08-384,923.76-151,603.72

Finding the Fourth Proportional to 278,928.08, 384,923.76 and 151,603.72

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Solution

The fourth proportional to 278,928.08, 384,923.76 and 151,603.72 is: 209,214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,928.08 : 384,923.76 = 151,603.72 : x
  2. Step 2: Convert to fraction form
    278,928.08/384,923.76 = 151,603.72/x
  3. Step 3: Cross multiply
    278,928.08x = 384,923.76 × 151,603.72
  4. Step 4: Simplify right side
    278,928.08x = 58,355,873,932.39
  5. Step 5: Solve for x
    x = 58,355,873,932.39/278,928.08
  6. Step 6: Final answer
    x = 209,214.77

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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.