Home / 712,876.80-1,069,315.20-214,240.80

Finding the Fourth Proportional to 712,876.80, 1,069,315.20 and 214,240.80

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Solution

The fourth proportional to 712,876.80, 1,069,315.20 and 214,240.80 is: 321,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,876.80 : 1,069,315.20 = 214,240.80 : x
  2. Step 2: Convert to fraction form
    712,876.80/1,069,315.20 = 214,240.80/x
  3. Step 3: Cross multiply
    712,876.80x = 1,069,315.20 × 214,240.80
  4. Step 4: Simplify right side
    712,876.80x = 229,090,943,900.16
  5. Step 5: Solve for x
    x = 229,090,943,900.16/712,876.80
  6. Step 6: Final answer
    x = 321,361.20

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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.