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Finding the Fourth Proportional to 371,679.60, 557,519.40 and 306,069.60

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Solution

The fourth proportional to 371,679.60, 557,519.40 and 306,069.60 is: 459,104.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,679.60 : 557,519.40 = 306,069.60 : x
  2. Step 2: Convert to fraction form
    371,679.60/557,519.40 = 306,069.60/x
  3. Step 3: Cross multiply
    371,679.60x = 557,519.40 × 306,069.60
  4. Step 4: Simplify right side
    371,679.60x = 170,639,739,750.24
  5. Step 5: Solve for x
    x = 170,639,739,750.24/371,679.60
  6. Step 6: Final answer
    x = 459,104.40

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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.