Home / 278,511.59-384,344.92-151,186.07

Finding the Fourth Proportional to 278,511.59, 384,344.92 and 151,186.07

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Solution

The fourth proportional to 278,511.59, 384,344.92 and 151,186.07 is: 208,636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,511.59 : 384,344.92 = 151,186.07 : x
  2. Step 2: Convert to fraction form
    278,511.59/384,344.92 = 151,186.07/x
  3. Step 3: Cross multiply
    278,511.59x = 384,344.92 × 151,186.07
  4. Step 4: Simplify right side
    278,511.59x = 58,107,597,979.26
  5. Step 5: Solve for x
    x = 58,107,597,979.26/278,511.59
  6. Step 6: Final answer
    x = 208,636.19

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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.