Home / 318,220.09-439,143.78-174,989.77

Finding the Fourth Proportional to 318,220.09, 439,143.78 and 174,989.77

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Solution

The fourth proportional to 318,220.09, 439,143.78 and 174,989.77 is: 241,485.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,220.09 : 439,143.78 = 174,989.77 : x
  2. Step 2: Convert to fraction form
    318,220.09/439,143.78 = 174,989.77/x
  3. Step 3: Cross multiply
    318,220.09x = 439,143.78 × 174,989.77
  4. Step 4: Simplify right side
    318,220.09x = 76,845,669,059.13
  5. Step 5: Solve for x
    x = 76,845,669,059.13/318,220.09
  6. Step 6: Final answer
    x = 241,485.91

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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.