Home / 289,979.20-434,277.60-178,004.80

Finding the Fourth Proportional to 289,979.20, 434,277.60 and 178,004.80

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Solution

The fourth proportional to 289,979.20, 434,277.60 and 178,004.80 is: 266,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,979.20 : 434,277.60 = 178,004.80 : x
  2. Step 2: Convert to fraction form
    289,979.20/434,277.60 = 178,004.80/x
  3. Step 3: Cross multiply
    289,979.20x = 434,277.60 × 178,004.80
  4. Step 4: Simplify right side
    289,979.20x = 77,303,497,332.48
  5. Step 5: Solve for x
    x = 77,303,497,332.48/289,979.20
  6. Step 6: Final answer
    x = 266,582.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.