Home / 278,511.57-384,345.59-151,187.18

Finding the Fourth Proportional to 278,511.57, 384,345.59 and 151,187.18

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Solution

The fourth proportional to 278,511.57, 384,345.59 and 151,187.18 is: 208,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,511.57 : 384,345.59 = 151,187.18 : x
  2. Step 2: Convert to fraction form
    278,511.57/384,345.59 = 151,187.18/x
  3. Step 3: Cross multiply
    278,511.57x = 384,345.59 × 151,187.18
  4. Step 4: Simplify right side
    278,511.57x = 58,108,123,219.87
  5. Step 5: Solve for x
    x = 58,108,123,219.87/278,511.57
  6. Step 6: Final answer
    x = 208,638.09

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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.