Home / 311,905.78-430,431.02-168,666.86

Finding the Fourth Proportional to 311,905.78, 430,431.02 and 168,666.86

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Solution

The fourth proportional to 311,905.78, 430,431.02 and 168,666.86 is: 232,760.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,905.78 : 430,431.02 = 168,666.86 : x
  2. Step 2: Convert to fraction form
    311,905.78/430,431.02 = 168,666.86/x
  3. Step 3: Cross multiply
    311,905.78x = 430,431.02 × 168,666.86
  4. Step 4: Simplify right side
    311,905.78x = 72,599,448,590.00
  5. Step 5: Solve for x
    x = 72,599,448,590.00/311,905.78
  6. Step 6: Final answer
    x = 232,760.83

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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.