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Finding the Fourth Proportional to 525,673.80, 787,344.30 and 209,968.20

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Solution

The fourth proportional to 525,673.80, 787,344.30 and 209,968.20 is: 314,486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,673.80 : 787,344.30 = 209,968.20 : x
  2. Step 2: Convert to fraction form
    525,673.80/787,344.30 = 209,968.20/x
  3. Step 3: Cross multiply
    525,673.80x = 787,344.30 × 209,968.20
  4. Step 4: Simplify right side
    525,673.80x = 165,317,265,451.26
  5. Step 5: Solve for x
    x = 165,317,265,451.26/525,673.80
  6. Step 6: Final answer
    x = 314,486.41

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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.