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Finding the Fourth Proportional to 315,838.33, 435,858.03 and 172,598.38

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Solution

The fourth proportional to 315,838.33, 435,858.03 and 172,598.38 is: 238,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,838.33 : 435,858.03 = 172,598.38 : x
  2. Step 2: Convert to fraction form
    315,838.33/435,858.03 = 172,598.38/x
  3. Step 3: Cross multiply
    315,838.33x = 435,858.03 × 172,598.38
  4. Step 4: Simplify right side
    315,838.33x = 75,228,389,887.99
  5. Step 5: Solve for x
    x = 75,228,389,887.99/315,838.33
  6. Step 6: Final answer
    x = 238,186.38

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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.