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Finding the Fourth Proportional to 315,190.61, 434,954.40 and 171,950.61

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Solution

The fourth proportional to 315,190.61, 434,954.40 and 171,950.61 is: 237,287.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,190.61 : 434,954.40 = 171,950.61 : x
  2. Step 2: Convert to fraction form
    315,190.61/434,954.40 = 171,950.61/x
  3. Step 3: Cross multiply
    315,190.61x = 434,954.40 × 171,950.61
  4. Step 4: Simplify right side
    315,190.61x = 74,790,674,402.18
  5. Step 5: Solve for x
    x = 74,790,674,402.18/315,190.61
  6. Step 6: Final answer
    x = 237,287.13

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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.