Home / 385,409.85-578,280.16-148,918.60

Finding the Fourth Proportional to 385,409.85, 578,280.16 and 148,918.60

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Solution

The fourth proportional to 385,409.85, 578,280.16 and 148,918.60 is: 223,441.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,409.85 : 578,280.16 = 148,918.60 : x
  2. Step 2: Convert to fraction form
    385,409.85/578,280.16 = 148,918.60/x
  3. Step 3: Cross multiply
    385,409.85x = 578,280.16 × 148,918.60
  4. Step 4: Simplify right side
    385,409.85x = 86,116,672,743.97
  5. Step 5: Solve for x
    x = 86,116,672,743.97/385,409.85
  6. Step 6: Final answer
    x = 223,441.81

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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.