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Finding the Fourth Proportional to 247,035.52, 340,900.14 and 139,603.20

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Solution

The fourth proportional to 247,035.52, 340,900.14 and 139,603.20 is: 192,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,035.52 : 340,900.14 = 139,603.20 : x
  2. Step 2: Convert to fraction form
    247,035.52/340,900.14 = 139,603.20/x
  3. Step 3: Cross multiply
    247,035.52x = 340,900.14 × 139,603.20
  4. Step 4: Simplify right side
    247,035.52x = 47,590,749,669.58
  5. Step 5: Solve for x
    x = 47,590,749,669.58/247,035.52
  6. Step 6: Final answer
    x = 192,647.40

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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.