Home / 387,933.48-581,143.65-218,942.62

Finding the Fourth Proportional to 387,933.48, 581,143.65 and 218,942.62

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Solution

The fourth proportional to 387,933.48, 581,143.65 and 218,942.62 is: 327,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,933.48 : 581,143.65 = 218,942.62 : x
  2. Step 2: Convert to fraction form
    387,933.48/581,143.65 = 218,942.62/x
  3. Step 3: Cross multiply
    387,933.48x = 581,143.65 × 218,942.62
  4. Step 4: Simplify right side
    387,933.48x = 127,237,113,611.60
  5. Step 5: Solve for x
    x = 127,237,113,611.60/387,933.48
  6. Step 6: Final answer
    x = 327,986.94

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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.