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Finding the Fourth Proportional to 399,039, 598,671 and 162,551.40

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Solution

The fourth proportional to 399,039, 598,671 and 162,551.40 is: 243,872.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,039 : 598,671 = 162,551.40 : x
  2. Step 2: Convert to fraction form
    399,039/598,671 = 162,551.40/x
  3. Step 3: Cross multiply
    399,039x = 598,671 × 162,551.40
  4. Step 4: Simplify right side
    399,039x = 97,314,809,189.40
  5. Step 5: Solve for x
    x = 97,314,809,189.40/399,039
  6. Step 6: Final answer
    x = 243,872.93

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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.