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Finding the Fourth Proportional to 446,912.10, 670,368.15 and 257,955.30

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Solution

The fourth proportional to 446,912.10, 670,368.15 and 257,955.30 is: 386,932.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,912.10 : 670,368.15 = 257,955.30 : x
  2. Step 2: Convert to fraction form
    446,912.10/670,368.15 = 257,955.30/x
  3. Step 3: Cross multiply
    446,912.10x = 670,368.15 × 257,955.30
  4. Step 4: Simplify right side
    446,912.10x = 172,925,017,243.70
  5. Step 5: Solve for x
    x = 172,925,017,243.70/446,912.10
  6. Step 6: Final answer
    x = 386,932.95

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Similar ratio
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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.