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Finding the Fourth Proportional to 425,645.40, 638,468.10 and 248,352.60

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Solution

The fourth proportional to 425,645.40, 638,468.10 and 248,352.60 is: 372,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,645.40 : 638,468.10 = 248,352.60 : x
  2. Step 2: Convert to fraction form
    425,645.40/638,468.10 = 248,352.60/x
  3. Step 3: Cross multiply
    425,645.40x = 638,468.10 × 248,352.60
  4. Step 4: Simplify right side
    425,645.40x = 158,565,212,652.06
  5. Step 5: Solve for x
    x = 158,565,212,652.06/425,645.40
  6. Step 6: Final answer
    x = 372,528.90

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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.