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Finding the Fourth Proportional to 245,385.90, 368,078.85 and 201,645.90

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Solution

The fourth proportional to 245,385.90, 368,078.85 and 201,645.90 is: 302,468.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,385.90 : 368,078.85 = 201,645.90 : x
  2. Step 2: Convert to fraction form
    245,385.90/368,078.85 = 201,645.90/x
  3. Step 3: Cross multiply
    245,385.90x = 368,078.85 × 201,645.90
  4. Step 4: Simplify right side
    245,385.90x = 74,221,590,979.22
  5. Step 5: Solve for x
    x = 74,221,590,979.22/245,385.90
  6. Step 6: Final answer
    x = 302,468.85

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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.