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Finding the Fourth Proportional to 328,703.04, 493,128.45 and 104,076.90

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Solution

The fourth proportional to 328,703.04, 493,128.45 and 104,076.90 is: 156,138.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,703.04 : 493,128.45 = 104,076.90 : x
  2. Step 2: Convert to fraction form
    328,703.04/493,128.45 = 104,076.90/x
  3. Step 3: Cross multiply
    328,703.04x = 493,128.45 × 104,076.90
  4. Step 4: Simplify right side
    328,703.04x = 51,323,280,377.81
  5. Step 5: Solve for x
    x = 51,323,280,377.81/328,703.04
  6. Step 6: Final answer
    x = 156,138.75

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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.