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Finding the Fourth Proportional to 418,777.92, 628,165.98 and 123,289.92

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Solution

The fourth proportional to 418,777.92, 628,165.98 and 123,289.92 is: 184,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,777.92 : 628,165.98 = 123,289.92 : x
  2. Step 2: Convert to fraction form
    418,777.92/628,165.98 = 123,289.92/x
  3. Step 3: Cross multiply
    418,777.92x = 628,165.98 × 123,289.92
  4. Step 4: Simplify right side
    418,777.92x = 77,446,533,420.92
  5. Step 5: Solve for x
    x = 77,446,533,420.92/418,777.92
  6. Step 6: Final answer
    x = 184,934.62

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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.