Home / 430,978.46-646,246.20-231,466.64

Finding the Fourth Proportional to 430,978.46, 646,246.20 and 231,466.64

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Solution

The fourth proportional to 430,978.46, 646,246.20 and 231,466.64 is: 347,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,978.46 : 646,246.20 = 231,466.64 : x
  2. Step 2: Convert to fraction form
    430,978.46/646,246.20 = 231,466.64/x
  3. Step 3: Cross multiply
    430,978.46x = 646,246.20 × 231,466.64
  4. Step 4: Simplify right side
    430,978.46x = 149,584,436,526.77
  5. Step 5: Solve for x
    x = 149,584,436,526.77/430,978.46
  6. Step 6: Final answer
    x = 347,081.00

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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.