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Finding the Fourth Proportional to 425,405.68, 587,072.40 and 234,431.32

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Solution

The fourth proportional to 425,405.68, 587,072.40 and 234,431.32 is: 323,522.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,405.68 : 587,072.40 = 234,431.32 : x
  2. Step 2: Convert to fraction form
    425,405.68/587,072.40 = 234,431.32/x
  3. Step 3: Cross multiply
    425,405.68x = 587,072.40 × 234,431.32
  4. Step 4: Simplify right side
    425,405.68x = 137,628,157,667.57
  5. Step 5: Solve for x
    x = 137,628,157,667.57/425,405.68
  6. Step 6: Final answer
    x = 323,522.14

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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.