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Finding the Fourth Proportional to 465,880.80, 698,836.80 and 128,893.26

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Solution

The fourth proportional to 465,880.80, 698,836.80 and 128,893.26 is: 193,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,880.80 : 698,836.80 = 128,893.26 : x
  2. Step 2: Convert to fraction form
    465,880.80/698,836.80 = 128,893.26/x
  3. Step 3: Cross multiply
    465,880.80x = 698,836.80 × 128,893.26
  4. Step 4: Simplify right side
    465,880.80x = 90,075,353,359.97
  5. Step 5: Solve for x
    x = 90,075,353,359.97/465,880.80
  6. Step 6: Final answer
    x = 193,344.21

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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.