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Finding the Fourth Proportional to 382,908.72, 574,363.16 and 172,300.60

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Solution

The fourth proportional to 382,908.72, 574,363.16 and 172,300.60 is: 258,450.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,908.72 : 574,363.16 = 172,300.60 : x
  2. Step 2: Convert to fraction form
    382,908.72/574,363.16 = 172,300.60/x
  3. Step 3: Cross multiply
    382,908.72x = 574,363.16 × 172,300.60
  4. Step 4: Simplify right side
    382,908.72x = 98,963,117,085.90
  5. Step 5: Solve for x
    x = 98,963,117,085.90/382,908.72
  6. Step 6: Final answer
    x = 258,450.94

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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.