Home / 430,816.46-646,317.90-131,289.12

Finding the Fourth Proportional to 430,816.46, 646,317.90 and 131,289.12

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Solution

The fourth proportional to 430,816.46, 646,317.90 and 131,289.12 is: 196,962.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,816.46 : 646,317.90 = 131,289.12 : x
  2. Step 2: Convert to fraction form
    430,816.46/646,317.90 = 131,289.12/x
  3. Step 3: Cross multiply
    430,816.46x = 646,317.90 × 131,289.12
  4. Step 4: Simplify right side
    430,816.46x = 84,854,508,331.25
  5. Step 5: Solve for x
    x = 84,854,508,331.25/430,816.46
  6. Step 6: Final answer
    x = 196,962.09

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1.5x scale

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.