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Finding the Fourth Proportional to 525,100.80, 787,359.60 and 209,200.80

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Solution

The fourth proportional to 525,100.80, 787,359.60 and 209,200.80 is: 313,685.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,100.80 : 787,359.60 = 209,200.80 : x
  2. Step 2: Convert to fraction form
    525,100.80/787,359.60 = 209,200.80/x
  3. Step 3: Cross multiply
    525,100.80x = 787,359.60 × 209,200.80
  4. Step 4: Simplify right side
    525,100.80x = 164,716,258,207.68
  5. Step 5: Solve for x
    x = 164,716,258,207.68/525,100.80
  6. Step 6: Final answer
    x = 313,685.03

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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.