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Finding the Fourth Proportional to 384,142.80, 576,300.60 and 117,915.60

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Solution

The fourth proportional to 384,142.80, 576,300.60 and 117,915.60 is: 176,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,142.80 : 576,300.60 = 117,915.60 : x
  2. Step 2: Convert to fraction form
    384,142.80/576,300.60 = 117,915.60/x
  3. Step 3: Cross multiply
    384,142.80x = 576,300.60 × 117,915.60
  4. Step 4: Simplify right side
    384,142.80x = 67,954,831,029.36
  5. Step 5: Solve for x
    x = 67,954,831,029.36/384,142.80
  6. Step 6: Final answer
    x = 176,899.92

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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.