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Finding the Fourth Proportional to 330,838.98, 494,017.52 and 262,605.49

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Solution

The fourth proportional to 330,838.98, 494,017.52 and 262,605.49 is: 392,129.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,838.98 : 494,017.52 = 262,605.49 : x
  2. Step 2: Convert to fraction form
    330,838.98/494,017.52 = 262,605.49/x
  3. Step 3: Cross multiply
    330,838.98x = 494,017.52 × 262,605.49
  4. Step 4: Simplify right side
    330,838.98x = 129,731,710,438.10
  5. Step 5: Solve for x
    x = 129,731,710,438.10/330,838.98
  6. Step 6: Final answer
    x = 392,129.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.