Home / 278,728.14-384,653.16-151,412.34

Finding the Fourth Proportional to 278,728.14, 384,653.16 and 151,412.34

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Solution

The fourth proportional to 278,728.14, 384,653.16 and 151,412.34 is: 208,953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,728.14 : 384,653.16 = 151,412.34 : x
  2. Step 2: Convert to fraction form
    278,728.14/384,653.16 = 151,412.34/x
  3. Step 3: Cross multiply
    278,728.14x = 384,653.16 × 151,412.34
  4. Step 4: Simplify right side
    278,728.14x = 58,241,235,043.99
  5. Step 5: Solve for x
    x = 58,241,235,043.99/278,728.14
  6. Step 6: Final answer
    x = 208,953.55

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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.