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Finding the Fourth Proportional to 315,588.60, 435,505.32 and 172,349.24

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Solution

The fourth proportional to 315,588.60, 435,505.32 and 172,349.24 is: 237,838.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,588.60 : 435,505.32 = 172,349.24 : x
  2. Step 2: Convert to fraction form
    315,588.60/435,505.32 = 172,349.24/x
  3. Step 3: Cross multiply
    315,588.60x = 435,505.32 × 172,349.24
  4. Step 4: Simplify right side
    315,588.60x = 75,059,008,740.43
  5. Step 5: Solve for x
    x = 75,059,008,740.43/315,588.60
  6. Step 6: Final answer
    x = 237,838.15

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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.