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Finding the Fourth Proportional to 283,187.32, 389,956.08 and 276,901.72

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Solution

The fourth proportional to 283,187.32, 389,956.08 and 276,901.72 is: 381,300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,187.32 : 389,956.08 = 276,901.72 : x
  2. Step 2: Convert to fraction form
    283,187.32/389,956.08 = 276,901.72/x
  3. Step 3: Cross multiply
    283,187.32x = 389,956.08 × 276,901.72
  4. Step 4: Simplify right side
    283,187.32x = 107,979,509,276.46
  5. Step 5: Solve for x
    x = 107,979,509,276.46/283,187.32
  6. Step 6: Final answer
    x = 381,300.65

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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.