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Finding the Fourth Proportional to 257,036.08, 354,695.88 and 143,836.96

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Solution

The fourth proportional to 257,036.08, 354,695.88 and 143,836.96 is: 198,487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,036.08 : 354,695.88 = 143,836.96 : x
  2. Step 2: Convert to fraction form
    257,036.08/354,695.88 = 143,836.96/x
  3. Step 3: Cross multiply
    257,036.08x = 354,695.88 × 143,836.96
  4. Step 4: Simplify right side
    257,036.08x = 51,018,377,103.72
  5. Step 5: Solve for x
    x = 51,018,377,103.72/257,036.08
  6. Step 6: Final answer
    x = 198,487.22

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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.