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Finding the Fourth Proportional to 315,168.40, 434,932.40 and 171,929.02

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Solution

The fourth proportional to 315,168.40, 434,932.40 and 171,929.02 is: 237,262.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,168.40 : 434,932.40 = 171,929.02 : x
  2. Step 2: Convert to fraction form
    315,168.40/434,932.40 = 171,929.02/x
  3. Step 3: Cross multiply
    315,168.40x = 434,932.40 × 171,929.02
  4. Step 4: Simplify right side
    315,168.40x = 74,777,501,298.25
  5. Step 5: Solve for x
    x = 74,777,501,298.25/315,168.40
  6. Step 6: Final answer
    x = 237,262.05

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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.