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Finding the Fourth Proportional to 490,010.40, 676,172.88 and 275,133.60

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Solution

The fourth proportional to 490,010.40, 676,172.88 and 275,133.60 is: 379,661.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,010.40 : 676,172.88 = 275,133.60 : x
  2. Step 2: Convert to fraction form
    490,010.40/676,172.88 = 275,133.60/x
  3. Step 3: Cross multiply
    490,010.40x = 676,172.88 × 275,133.60
  4. Step 4: Simplify right side
    490,010.40x = 186,037,878,696.77
  5. Step 5: Solve for x
    x = 186,037,878,696.77/490,010.40
  6. Step 6: Final answer
    x = 379,661.08

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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.