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Finding the Fourth Proportional to 354,814.60, 530,925.90 and 261,502.60

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Solution

The fourth proportional to 354,814.60, 530,925.90 and 261,502.60 is: 391,298.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,814.60 : 530,925.90 = 261,502.60 : x
  2. Step 2: Convert to fraction form
    354,814.60/530,925.90 = 261,502.60/x
  3. Step 3: Cross multiply
    354,814.60x = 530,925.90 × 261,502.60
  4. Step 4: Simplify right side
    354,814.60x = 138,838,503,257.34
  5. Step 5: Solve for x
    x = 138,838,503,257.34/354,814.60
  6. Step 6: Final answer
    x = 391,298.73

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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.