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Finding the Fourth Proportional to 308,014.64, 425,055.60 and 172,051.04

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Solution

The fourth proportional to 308,014.64, 425,055.60 and 172,051.04 is: 237,427.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,014.64 : 425,055.60 = 172,051.04 : x
  2. Step 2: Convert to fraction form
    308,014.64/425,055.60 = 172,051.04/x
  3. Step 3: Cross multiply
    308,014.64x = 425,055.60 × 172,051.04
  4. Step 4: Simplify right side
    308,014.64x = 73,131,258,037.82
  5. Step 5: Solve for x
    x = 73,131,258,037.82/308,014.64
  6. Step 6: Final answer
    x = 237,427.86

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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.