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Finding the Fourth Proportional to 351,603.47, 485,215.12 and 190,458.52

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Solution

The fourth proportional to 351,603.47, 485,215.12 and 190,458.52 is: 262,834.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,603.47 : 485,215.12 = 190,458.52 : x
  2. Step 2: Convert to fraction form
    351,603.47/485,215.12 = 190,458.52/x
  3. Step 3: Cross multiply
    351,603.47x = 485,215.12 × 190,458.52
  4. Step 4: Simplify right side
    351,603.47x = 92,413,353,636.82
  5. Step 5: Solve for x
    x = 92,413,353,636.82/351,603.47
  6. Step 6: Final answer
    x = 262,834.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.