Home / 221,075.36-331,683.13-78,917.58

Finding the Fourth Proportional to 221,075.36, 331,683.13 and 78,917.58

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Solution

The fourth proportional to 221,075.36, 331,683.13 and 78,917.58 is: 118,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,075.36 : 331,683.13 = 78,917.58 : x
  2. Step 2: Convert to fraction form
    221,075.36/331,683.13 = 78,917.58/x
  3. Step 3: Cross multiply
    221,075.36x = 331,683.13 × 78,917.58
  4. Step 4: Simplify right side
    221,075.36x = 26,175,630,578.34
  5. Step 5: Solve for x
    x = 26,175,630,578.34/221,075.36
  6. Step 6: Final answer
    x = 118,401.40

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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.