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Finding the Fourth Proportional to 328,681.90, 493,040.79 and 104,025.57

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Solution

The fourth proportional to 328,681.90, 493,040.79 and 104,025.57 is: 156,044.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,681.90 : 493,040.79 = 104,025.57 : x
  2. Step 2: Convert to fraction form
    328,681.90/493,040.79 = 104,025.57/x
  3. Step 3: Cross multiply
    328,681.90x = 493,040.79 × 104,025.57
  4. Step 4: Simplify right side
    328,681.90x = 51,288,849,213.00
  5. Step 5: Solve for x
    x = 51,288,849,213.00/328,681.90
  6. Step 6: Final answer
    x = 156,044.03

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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.