Home / 379,158.80-522,998.85-288,315.60

Finding the Fourth Proportional to 379,158.80, 522,998.85 and 288,315.60

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Solution

The fourth proportional to 379,158.80, 522,998.85 and 288,315.60 is: 397,692.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,158.80 : 522,998.85 = 288,315.60 : x
  2. Step 2: Convert to fraction form
    379,158.80/522,998.85 = 288,315.60/x
  3. Step 3: Cross multiply
    379,158.80x = 522,998.85 × 288,315.60
  4. Step 4: Simplify right side
    379,158.80x = 150,788,728,318.24
  5. Step 5: Solve for x
    x = 150,788,728,318.24/379,158.80
  6. Step 6: Final answer
    x = 397,692.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.