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Finding the Fourth Proportional to 272,445.51, 408,683.64 and 82,912.05

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Solution

The fourth proportional to 272,445.51, 408,683.64 and 82,912.05 is: 124,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,445.51 : 408,683.64 = 82,912.05 : x
  2. Step 2: Convert to fraction form
    272,445.51/408,683.64 = 82,912.05/x
  3. Step 3: Cross multiply
    272,445.51x = 408,683.64 × 82,912.05
  4. Step 4: Simplify right side
    272,445.51x = 33,884,798,393.86
  5. Step 5: Solve for x
    x = 33,884,798,393.86/272,445.51
  6. Step 6: Final answer
    x = 124,372.75

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1.5x scale

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.