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Finding the Fourth Proportional to 323,991.70, 486,058.59 and 99,368.98

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Solution

The fourth proportional to 323,991.70, 486,058.59 and 99,368.98 is: 149,075.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,991.70 : 486,058.59 = 99,368.98 : x
  2. Step 2: Convert to fraction form
    323,991.70/486,058.59 = 99,368.98/x
  3. Step 3: Cross multiply
    323,991.70x = 486,058.59 × 99,368.98
  4. Step 4: Simplify right side
    323,991.70x = 48,299,145,093.39
  5. Step 5: Solve for x
    x = 48,299,145,093.39/323,991.70
  6. Step 6: Final answer
    x = 149,075.26

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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.