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Finding the Fourth Proportional to 318,327.90, 477,712.65 and 239,607.90

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Solution

The fourth proportional to 318,327.90, 477,712.65 and 239,607.90 is: 359,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,327.90 : 477,712.65 = 239,607.90 : x
  2. Step 2: Convert to fraction form
    318,327.90/477,712.65 = 239,607.90/x
  3. Step 3: Cross multiply
    318,327.90x = 477,712.65 × 239,607.90
  4. Step 4: Simplify right side
    318,327.90x = 114,463,724,869.94
  5. Step 5: Solve for x
    x = 114,463,724,869.94/318,327.90
  6. Step 6: Final answer
    x = 359,578.05

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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.