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Finding the Fourth Proportional to 425,662.40, 638,493.60 and 357,233.60

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Solution

The fourth proportional to 425,662.40, 638,493.60 and 357,233.60 is: 535,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,662.40 : 638,493.60 = 357,233.60 : x
  2. Step 2: Convert to fraction form
    425,662.40/638,493.60 = 357,233.60/x
  3. Step 3: Cross multiply
    425,662.40x = 638,493.60 × 357,233.60
  4. Step 4: Simplify right side
    425,662.40x = 228,091,367,304.96
  5. Step 5: Solve for x
    x = 228,091,367,304.96/425,662.40
  6. Step 6: Final answer
    x = 535,850.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.