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Finding the Fourth Proportional to 421,390.56, 581,519.52 and 240,094.56

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Solution

The fourth proportional to 421,390.56, 581,519.52 and 240,094.56 is: 331,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,390.56 : 581,519.52 = 240,094.56 : x
  2. Step 2: Convert to fraction form
    421,390.56/581,519.52 = 240,094.56/x
  3. Step 3: Cross multiply
    421,390.56x = 581,519.52 × 240,094.56
  4. Step 4: Simplify right side
    421,390.56x = 139,619,673,285.81
  5. Step 5: Solve for x
    x = 139,619,673,285.81/421,390.56
  6. Step 6: Final answer
    x = 331,330.80

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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.