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Finding the Fourth Proportional to 424,880.80, 635,938.80 and 330,877.60

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Solution

The fourth proportional to 424,880.80, 635,938.80 and 330,877.60 is: 495,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,880.80 : 635,938.80 = 330,877.60 : x
  2. Step 2: Convert to fraction form
    424,880.80/635,938.80 = 330,877.60/x
  3. Step 3: Cross multiply
    424,880.80x = 635,938.80 × 330,877.60
  4. Step 4: Simplify right side
    424,880.80x = 210,417,903,890.88
  5. Step 5: Solve for x
    x = 210,417,903,890.88/424,880.80
  6. Step 6: Final answer
    x = 495,239.85

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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.