Home / 525,022.20-787,922.10-209,705.40

Finding the Fourth Proportional to 525,022.20, 787,922.10 and 209,705.40

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Solution

The fourth proportional to 525,022.20, 787,922.10 and 209,705.40 is: 314,713.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,022.20 : 787,922.10 = 209,705.40 : x
  2. Step 2: Convert to fraction form
    525,022.20/787,922.10 = 209,705.40/x
  3. Step 3: Cross multiply
    525,022.20x = 787,922.10 × 209,705.40
  4. Step 4: Simplify right side
    525,022.20x = 165,231,519,149.34
  5. Step 5: Solve for x
    x = 165,231,519,149.34/525,022.20
  6. Step 6: Final answer
    x = 314,713.40

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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.