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Finding the Fourth Proportional to 431,130.33, 594,978.21 and 240,143.81

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Solution

The fourth proportional to 431,130.33, 594,978.21 and 240,143.81 is: 331,408.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,130.33 : 594,978.21 = 240,143.81 : x
  2. Step 2: Convert to fraction form
    431,130.33/594,978.21 = 240,143.81/x
  3. Step 3: Cross multiply
    431,130.33x = 594,978.21 × 240,143.81
  4. Step 4: Simplify right side
    431,130.33x = 142,880,331,241.49
  5. Step 5: Solve for x
    x = 142,880,331,241.49/431,130.33
  6. Step 6: Final answer
    x = 331,408.67

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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.