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Finding the Fourth Proportional to 399,080.62, 550,954.98 and 276,750.76

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Solution

The fourth proportional to 399,080.62, 550,954.98 and 276,750.76 is: 382,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,080.62 : 550,954.98 = 276,750.76 : x
  2. Step 2: Convert to fraction form
    399,080.62/550,954.98 = 276,750.76/x
  3. Step 3: Cross multiply
    399,080.62x = 550,954.98 × 276,750.76
  4. Step 4: Simplify right side
    399,080.62x = 152,477,209,440.79
  5. Step 5: Solve for x
    x = 152,477,209,440.79/399,080.62
  6. Step 6: Final answer
    x = 382,071.20

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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.