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Finding the Fourth Proportional to 245,762.78, 339,153.33 and 138,334.46

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Solution

The fourth proportional to 245,762.78, 339,153.33 and 138,334.46 is: 190,901.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,762.78 : 339,153.33 = 138,334.46 : x
  2. Step 2: Convert to fraction form
    245,762.78/339,153.33 = 138,334.46/x
  3. Step 3: Cross multiply
    245,762.78x = 339,153.33 × 138,334.46
  4. Step 4: Simplify right side
    245,762.78x = 46,916,592,762.75
  5. Step 5: Solve for x
    x = 46,916,592,762.75/245,762.78
  6. Step 6: Final answer
    x = 190,901.95

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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.