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Finding the Fourth Proportional to 538,408.40, 807,466.80 and 159,328.40

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Solution

The fourth proportional to 538,408.40, 807,466.80 and 159,328.40 is: 238,949.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,408.40 : 807,466.80 = 159,328.40 : x
  2. Step 2: Convert to fraction form
    538,408.40/807,466.80 = 159,328.40/x
  3. Step 3: Cross multiply
    538,408.40x = 807,466.80 × 159,328.40
  4. Step 4: Simplify right side
    538,408.40x = 128,652,393,297.12
  5. Step 5: Solve for x
    x = 128,652,393,297.12/538,408.40
  6. Step 6: Final answer
    x = 238,949.45

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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.