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Finding the Fourth Proportional to 245,838.80, 343,387 and 245,838.80

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Solution

The fourth proportional to 245,838.80, 343,387 and 245,838.80 is: 343,387

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,838.80 : 343,387 = 245,838.80 : x
  2. Step 2: Convert to fraction form
    245,838.80/343,387 = 245,838.80/x
  3. Step 3: Cross multiply
    245,838.80x = 343,387 × 245,838.80
  4. Step 4: Simplify right side
    245,838.80x = 84,417,848,015.60
  5. Step 5: Solve for x
    x = 84,417,848,015.60/245,838.80
  6. Step 6: Final answer
    x = 343,387

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.