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Finding the Fourth Proportional to 508,942.56, 702,360.12 and 279,518.88

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Solution

The fourth proportional to 508,942.56, 702,360.12 and 279,518.88 is: 385,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,942.56 : 702,360.12 = 279,518.88 : x
  2. Step 2: Convert to fraction form
    508,942.56/702,360.12 = 279,518.88/x
  3. Step 3: Cross multiply
    508,942.56x = 702,360.12 × 279,518.88
  4. Step 4: Simplify right side
    508,942.56x = 196,322,914,099.07
  5. Step 5: Solve for x
    x = 196,322,914,099.07/508,942.56
  6. Step 6: Final answer
    x = 385,746.70

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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.