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Finding the Fourth Proportional to 354,276.45, 530,856.95 and 220,956.93

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Solution

The fourth proportional to 354,276.45, 530,856.95 and 220,956.93 is: 331,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,276.45 : 530,856.95 = 220,956.93 : x
  2. Step 2: Convert to fraction form
    354,276.45/530,856.95 = 220,956.93/x
  3. Step 3: Cross multiply
    354,276.45x = 530,856.95 × 220,956.93
  4. Step 4: Simplify right side
    354,276.45x = 117,296,520,836.38
  5. Step 5: Solve for x
    x = 117,296,520,836.38/354,276.45
  6. Step 6: Final answer
    x = 331,087.55

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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.