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Finding the Fourth Proportional to 315,508.88, 435,862.86 and 272,993.60

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Solution

The fourth proportional to 315,508.88, 435,862.86 and 272,993.60 is: 377,129.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,508.88 : 435,862.86 = 272,993.60 : x
  2. Step 2: Convert to fraction form
    315,508.88/435,862.86 = 272,993.60/x
  3. Step 3: Cross multiply
    315,508.88x = 435,862.86 × 272,993.60
  4. Step 4: Simplify right side
    315,508.88x = 118,987,771,257.70
  5. Step 5: Solve for x
    x = 118,987,771,257.70/315,508.88
  6. Step 6: Final answer
    x = 377,129.71

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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.