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Finding the Fourth Proportional to 415,457.76, 623,291.78 and 115,938.30

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Solution

The fourth proportional to 415,457.76, 623,291.78 and 115,938.30 is: 173,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,457.76 : 623,291.78 = 115,938.30 : x
  2. Step 2: Convert to fraction form
    415,457.76/623,291.78 = 115,938.30/x
  3. Step 3: Cross multiply
    415,457.76x = 623,291.78 × 115,938.30
  4. Step 4: Simplify right side
    415,457.76x = 72,263,388,797.48
  5. Step 5: Solve for x
    x = 72,263,388,797.48/415,457.76
  6. Step 6: Final answer
    x = 173,936.79

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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.