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Finding the Fourth Proportional to 405,331.54, 607,669.35 and 168,851.86

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Solution

The fourth proportional to 405,331.54, 607,669.35 and 168,851.86 is: 253,141.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,331.54 : 607,669.35 = 168,851.86 : x
  2. Step 2: Convert to fraction form
    405,331.54/607,669.35 = 168,851.86/x
  3. Step 3: Cross multiply
    405,331.54x = 607,669.35 × 168,851.86
  4. Step 4: Simplify right side
    405,331.54x = 102,606,100,012.49
  5. Step 5: Solve for x
    x = 102,606,100,012.49/405,331.54
  6. Step 6: Final answer
    x = 253,141.17

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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.