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Finding the Fourth Proportional to 352,898.48, 529,349.50 and 86,659.08

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Solution

The fourth proportional to 352,898.48, 529,349.50 and 86,659.08 is: 129,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,898.48 : 529,349.50 = 86,659.08 : x
  2. Step 2: Convert to fraction form
    352,898.48/529,349.50 = 86,659.08/x
  3. Step 3: Cross multiply
    352,898.48x = 529,349.50 × 86,659.08
  4. Step 4: Simplify right side
    352,898.48x = 45,872,940,668.46
  5. Step 5: Solve for x
    x = 45,872,940,668.46/352,898.48
  6. Step 6: Final answer
    x = 129,989.06

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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.