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Finding the Fourth Proportional to 352,765.08, 486,892.80 and 216,915.90

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Solution

The fourth proportional to 352,765.08, 486,892.80 and 216,915.90 is: 299,391.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,765.08 : 486,892.80 = 216,915.90 : x
  2. Step 2: Convert to fraction form
    352,765.08/486,892.80 = 216,915.90/x
  3. Step 3: Cross multiply
    352,765.08x = 486,892.80 × 216,915.90
  4. Step 4: Simplify right side
    352,765.08x = 105,614,789,915.52
  5. Step 5: Solve for x
    x = 105,614,789,915.52/352,765.08
  6. Step 6: Final answer
    x = 299,391.28

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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.