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Finding the Fourth Proportional to 245,980.84, 339,337.56 and 143,943.16

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Solution

The fourth proportional to 245,980.84, 339,337.56 and 143,943.16 is: 198,573.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,980.84 : 339,337.56 = 143,943.16 : x
  2. Step 2: Convert to fraction form
    245,980.84/339,337.56 = 143,943.16/x
  3. Step 3: Cross multiply
    245,980.84x = 339,337.56 × 143,943.16
  4. Step 4: Simplify right side
    245,980.84x = 48,845,320,693.09
  5. Step 5: Solve for x
    x = 48,845,320,693.09/245,980.84
  6. Step 6: Final answer
    x = 198,573.68

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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.