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Finding the Fourth Proportional to 518,322.56, 777,480.74 and 134,071.44

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Solution

The fourth proportional to 518,322.56, 777,480.74 and 134,071.44 is: 201,106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,322.56 : 777,480.74 = 134,071.44 : x
  2. Step 2: Convert to fraction form
    518,322.56/777,480.74 = 134,071.44/x
  3. Step 3: Cross multiply
    518,322.56x = 777,480.74 × 134,071.44
  4. Step 4: Simplify right side
    518,322.56x = 104,237,962,384.07
  5. Step 5: Solve for x
    x = 104,237,962,384.07/518,322.56
  6. Step 6: Final answer
    x = 201,106.36

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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.