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Finding the Fourth Proportional to 354,614.60, 530,625.90 and 261,302.60

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Solution

The fourth proportional to 354,614.60, 530,625.90 and 261,302.60 is: 390,998.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,614.60 : 530,625.90 = 261,302.60 : x
  2. Step 2: Convert to fraction form
    354,614.60/530,625.90 = 261,302.60/x
  3. Step 3: Cross multiply
    354,614.60x = 530,625.90 × 261,302.60
  4. Step 4: Simplify right side
    354,614.60x = 138,653,927,297.34
  5. Step 5: Solve for x
    x = 138,653,927,297.34/354,614.60
  6. Step 6: Final answer
    x = 390,998.92

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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.