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Finding the Fourth Proportional to 305,495.52, 458,059.22 and 136,985.36

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Solution

The fourth proportional to 305,495.52, 458,059.22 and 136,985.36 is: 205,395.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,495.52 : 458,059.22 = 136,985.36 : x
  2. Step 2: Convert to fraction form
    305,495.52/458,059.22 = 136,985.36/x
  3. Step 3: Cross multiply
    305,495.52x = 458,059.22 × 136,985.36
  4. Step 4: Simplify right side
    305,495.52x = 62,747,407,153.02
  5. Step 5: Solve for x
    x = 62,747,407,153.02/305,495.52
  6. Step 6: Final answer
    x = 205,395.51

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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.