Home / 421,250.16-581,539.32-285,999.60

Finding the Fourth Proportional to 421,250.16, 581,539.32 and 285,999.60

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Solution

The fourth proportional to 421,250.16, 581,539.32 and 285,999.60 is: 394,824.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,250.16 : 581,539.32 = 285,999.60 : x
  2. Step 2: Convert to fraction form
    421,250.16/581,539.32 = 285,999.60/x
  3. Step 3: Cross multiply
    421,250.16x = 581,539.32 × 285,999.60
  4. Step 4: Simplify right side
    421,250.16x = 166,320,012,904.27
  5. Step 5: Solve for x
    x = 166,320,012,904.27/421,250.16
  6. Step 6: Final answer
    x = 394,824.81

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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.