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Finding the Fourth Proportional to 274,802.76, 379,224.72 and 153,943.20

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Solution

The fourth proportional to 274,802.76, 379,224.72 and 153,943.20 is: 212,439.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,802.76 : 379,224.72 = 153,943.20 : x
  2. Step 2: Convert to fraction form
    274,802.76/379,224.72 = 153,943.20/x
  3. Step 3: Cross multiply
    274,802.76x = 379,224.72 × 153,943.20
  4. Step 4: Simplify right side
    274,802.76x = 58,379,066,915.90
  5. Step 5: Solve for x
    x = 58,379,066,915.90/274,802.76
  6. Step 6: Final answer
    x = 212,439.89

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1.5x scale

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.