Home / 347,638.40-521,457.60-268,906.40

Finding the Fourth Proportional to 347,638.40, 521,457.60 and 268,906.40

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Solution

The fourth proportional to 347,638.40, 521,457.60 and 268,906.40 is: 403,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,638.40 : 521,457.60 = 268,906.40 : x
  2. Step 2: Convert to fraction form
    347,638.40/521,457.60 = 268,906.40/x
  3. Step 3: Cross multiply
    347,638.40x = 521,457.60 × 268,906.40
  4. Step 4: Simplify right side
    347,638.40x = 140,223,285,968.64
  5. Step 5: Solve for x
    x = 140,223,285,968.64/347,638.40
  6. Step 6: Final answer
    x = 403,359.60

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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.