Home / 278,467.72-384,285.77-151,143.28

Finding the Fourth Proportional to 278,467.72, 384,285.77 and 151,143.28

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Solution

The fourth proportional to 278,467.72, 384,285.77 and 151,143.28 is: 208,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,467.72 : 384,285.77 = 151,143.28 : x
  2. Step 2: Convert to fraction form
    278,467.72/384,285.77 = 151,143.28/x
  3. Step 3: Cross multiply
    278,467.72x = 384,285.77 × 151,143.28
  4. Step 4: Simplify right side
    278,467.72x = 58,082,210,979.41
  5. Step 5: Solve for x
    x = 58,082,210,979.41/278,467.72
  6. Step 6: Final answer
    x = 208,577.90

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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.