Home / 278,501.22-384,289.99-163,771.20

Finding the Fourth Proportional to 278,501.22, 384,289.99 and 163,771.20

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Solution

The fourth proportional to 278,501.22, 384,289.99 and 163,771.20 is: 225,979.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,501.22 : 384,289.99 = 163,771.20 : x
  2. Step 2: Convert to fraction form
    278,501.22/384,289.99 = 163,771.20/x
  3. Step 3: Cross multiply
    278,501.22x = 384,289.99 × 163,771.20
  4. Step 4: Simplify right side
    278,501.22x = 62,935,632,400.86
  5. Step 5: Solve for x
    x = 62,935,632,400.86/278,501.22
  6. Step 6: Final answer
    x = 225,979.74

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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.