Home / 315,511.88-435,867-272,996.60

Finding the Fourth Proportional to 315,511.88, 435,867 and 272,996.60

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Solution

The fourth proportional to 315,511.88, 435,867 and 272,996.60 is: 377,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,511.88 : 435,867 = 272,996.60 : x
  2. Step 2: Convert to fraction form
    315,511.88/435,867 = 272,996.60/x
  3. Step 3: Cross multiply
    315,511.88x = 435,867 × 272,996.60
  4. Step 4: Simplify right side
    315,511.88x = 118,990,209,052.20
  5. Step 5: Solve for x
    x = 118,990,209,052.20/315,511.88
  6. Step 6: Final answer
    x = 377,133.85

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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.