Home / 385,220.80-578,487.30-252,688.60

Finding the Fourth Proportional to 385,220.80, 578,487.30 and 252,688.60

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Solution

The fourth proportional to 385,220.80, 578,487.30 and 252,688.60 is: 379,463.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,220.80 : 578,487.30 = 252,688.60 : x
  2. Step 2: Convert to fraction form
    385,220.80/578,487.30 = 252,688.60/x
  3. Step 3: Cross multiply
    385,220.80x = 578,487.30 × 252,688.60
  4. Step 4: Simplify right side
    385,220.80x = 146,177,145,954.78
  5. Step 5: Solve for x
    x = 146,177,145,954.78/385,220.80
  6. Step 6: Final answer
    x = 379,463.27

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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.