Home / 278,738.16-384,659.34-151,411.08

Finding the Fourth Proportional to 278,738.16, 384,659.34 and 151,411.08

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Solution

The fourth proportional to 278,738.16, 384,659.34 and 151,411.08 is: 208,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,738.16 : 384,659.34 = 151,411.08 : x
  2. Step 2: Convert to fraction form
    278,738.16/384,659.34 = 151,411.08/x
  3. Step 3: Cross multiply
    278,738.16x = 384,659.34 × 151,411.08
  4. Step 4: Simplify right side
    278,738.16x = 58,241,686,101.49
  5. Step 5: Solve for x
    x = 58,241,686,101.49/278,738.16
  6. Step 6: Final answer
    x = 208,947.66

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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.