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Finding the Fourth Proportional to 421,289.01, 581,382.72 and 239,998.26

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Solution

The fourth proportional to 421,289.01, 581,382.72 and 239,998.26 is: 331,199.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,289.01 : 581,382.72 = 239,998.26 : x
  2. Step 2: Convert to fraction form
    421,289.01/581,382.72 = 239,998.26/x
  3. Step 3: Cross multiply
    421,289.01x = 581,382.72 × 239,998.26
  4. Step 4: Simplify right side
    421,289.01x = 139,530,841,194.07
  5. Step 5: Solve for x
    x = 139,530,841,194.07/421,289.01
  6. Step 6: Final answer
    x = 331,199.81

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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.