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Finding the Fourth Proportional to 351,503.43, 485,123.03 and 215,513.34

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Solution

The fourth proportional to 351,503.43, 485,123.03 and 215,513.34 is: 297,438.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,503.43 : 485,123.03 = 215,513.34 : x
  2. Step 2: Convert to fraction form
    351,503.43/485,123.03 = 215,513.34/x
  3. Step 3: Cross multiply
    351,503.43x = 485,123.03 × 215,513.34
  4. Step 4: Simplify right side
    351,503.43x = 104,550,483,428.65
  5. Step 5: Solve for x
    x = 104,550,483,428.65/351,503.43
  6. Step 6: Final answer
    x = 297,438.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.