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Finding the Fourth Proportional to 279,217.94, 385,324.80 and 151,893.53

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Solution

The fourth proportional to 279,217.94, 385,324.80 and 151,893.53 is: 209,615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,217.94 : 385,324.80 = 151,893.53 : x
  2. Step 2: Convert to fraction form
    279,217.94/385,324.80 = 151,893.53/x
  3. Step 3: Cross multiply
    279,217.94x = 385,324.80 × 151,893.53
  4. Step 4: Simplify right side
    279,217.94x = 58,528,343,017.29
  5. Step 5: Solve for x
    x = 58,528,343,017.29/279,217.94
  6. Step 6: Final answer
    x = 209,615.27

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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.