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Finding the Fourth Proportional to 278,409.92, 384,203.43 and 151,085.51

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Solution

The fourth proportional to 278,409.92, 384,203.43 and 151,085.51 is: 208,496.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,409.92 : 384,203.43 = 151,085.51 : x
  2. Step 2: Convert to fraction form
    278,409.92/384,203.43 = 151,085.51/x
  3. Step 3: Cross multiply
    278,409.92x = 384,203.43 × 151,085.51
  4. Step 4: Simplify right side
    278,409.92x = 58,047,569,244.28
  5. Step 5: Solve for x
    x = 58,047,569,244.28/278,409.92
  6. Step 6: Final answer
    x = 208,496.77

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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.