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Finding the Fourth Proportional to 352,156.48, 485,438.70 and 215,938.24

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Solution

The fourth proportional to 352,156.48, 485,438.70 and 215,938.24 is: 297,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,156.48 : 485,438.70 = 215,938.24 : x
  2. Step 2: Convert to fraction form
    352,156.48/485,438.70 = 215,938.24/x
  3. Step 3: Cross multiply
    352,156.48x = 485,438.70 × 215,938.24
  4. Step 4: Simplify right side
    352,156.48x = 104,824,778,505.89
  5. Step 5: Solve for x
    x = 104,824,778,505.89/352,156.48
  6. Step 6: Final answer
    x = 297,665.34

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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.