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Finding the Fourth Proportional to 328,262.52, 492,393.72 and 103,780.56

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Solution

The fourth proportional to 328,262.52, 492,393.72 and 103,780.56 is: 155,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,262.52 : 492,393.72 = 103,780.56 : x
  2. Step 2: Convert to fraction form
    328,262.52/492,393.72 = 103,780.56/x
  3. Step 3: Cross multiply
    328,262.52x = 492,393.72 × 103,780.56
  4. Step 4: Simplify right side
    328,262.52x = 51,100,896,002.08
  5. Step 5: Solve for x
    x = 51,100,896,002.08/328,262.52
  6. Step 6: Final answer
    x = 155,670.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.