Home / 312,209.85-468,176.27-143,689.35

Finding the Fourth Proportional to 312,209.85, 468,176.27 and 143,689.35

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Solution

The fourth proportional to 312,209.85, 468,176.27 and 143,689.35 is: 215,470.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,209.85 : 468,176.27 = 143,689.35 : x
  2. Step 2: Convert to fraction form
    312,209.85/468,176.27 = 143,689.35/x
  3. Step 3: Cross multiply
    312,209.85x = 468,176.27 × 143,689.35
  4. Step 4: Simplify right side
    312,209.85x = 67,271,943,203.28
  5. Step 5: Solve for x
    x = 67,271,943,203.28/312,209.85
  6. Step 6: Final answer
    x = 215,470.28

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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.