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Finding the Fourth Proportional to 513,531.04, 770,141.04 and 139,505.44

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Solution

The fourth proportional to 513,531.04, 770,141.04 and 139,505.44 is: 209,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,531.04 : 770,141.04 = 139,505.44 : x
  2. Step 2: Convert to fraction form
    513,531.04/770,141.04 = 139,505.44/x
  3. Step 3: Cross multiply
    513,531.04x = 770,141.04 × 139,505.44
  4. Step 4: Simplify right side
    513,531.04x = 107,438,864,647.26
  5. Step 5: Solve for x
    x = 107,438,864,647.26/513,531.04
  6. Step 6: Final answer
    x = 209,215.91

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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.