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Finding the Fourth Proportional to 274,782.65, 379,155.98 and 153,929.03

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Solution

The fourth proportional to 274,782.65, 379,155.98 and 153,929.03 is: 212,397.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,782.65 : 379,155.98 = 153,929.03 : x
  2. Step 2: Convert to fraction form
    274,782.65/379,155.98 = 153,929.03/x
  3. Step 3: Cross multiply
    274,782.65x = 379,155.98 × 153,929.03
  4. Step 4: Simplify right side
    274,782.65x = 58,363,112,825.96
  5. Step 5: Solve for x
    x = 58,363,112,825.96/274,782.65
  6. Step 6: Final answer
    x = 212,397.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.