Home / 278,345.92-384,117.39-151,021.51

Finding the Fourth Proportional to 278,345.92, 384,117.39 and 151,021.51

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Solution

The fourth proportional to 278,345.92, 384,117.39 and 151,021.51 is: 208,409.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,345.92 : 384,117.39 = 151,021.51 : x
  2. Step 2: Convert to fraction form
    278,345.92/384,117.39 = 151,021.51/x
  3. Step 3: Cross multiply
    278,345.92x = 384,117.39 × 151,021.51
  4. Step 4: Simplify right side
    278,345.92x = 58,009,988,255.06
  5. Step 5: Solve for x
    x = 58,009,988,255.06/278,345.92
  6. Step 6: Final answer
    x = 208,409.69

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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.