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Finding the Fourth Proportional to 202,371.32, 279,258 and 111,712.64

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Solution

The fourth proportional to 202,371.32, 279,258 and 111,712.64 is: 154,155.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,371.32 : 279,258 = 111,712.64 : x
  2. Step 2: Convert to fraction form
    202,371.32/279,258 = 111,712.64/x
  3. Step 3: Cross multiply
    202,371.32x = 279,258 × 111,712.64
  4. Step 4: Simplify right side
    202,371.32x = 31,196,648,421.12
  5. Step 5: Solve for x
    x = 31,196,648,421.12/202,371.32
  6. Step 6: Final answer
    x = 154,155.48

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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.