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Finding the Fourth Proportional to 245,418.57, 368,010 and 145,591.74

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Solution

The fourth proportional to 245,418.57, 368,010 and 145,591.74 is: 218,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,418.57 : 368,010 = 145,591.74 : x
  2. Step 2: Convert to fraction form
    245,418.57/368,010 = 145,591.74/x
  3. Step 3: Cross multiply
    245,418.57x = 368,010 × 145,591.74
  4. Step 4: Simplify right side
    245,418.57x = 53,579,216,237.40
  5. Step 5: Solve for x
    x = 53,579,216,237.40/245,418.57
  6. Step 6: Final answer
    x = 218,317.69

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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.