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Finding the Fourth Proportional to 405,726.69, 608,645.40 and 169,014.02

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Solution

The fourth proportional to 405,726.69, 608,645.40 and 169,014.02 is: 253,544.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,726.69 : 608,645.40 = 169,014.02 : x
  2. Step 2: Convert to fraction form
    405,726.69/608,645.40 = 169,014.02/x
  3. Step 3: Cross multiply
    405,726.69x = 608,645.40 × 169,014.02
  4. Step 4: Simplify right side
    405,726.69x = 102,869,602,765.28
  5. Step 5: Solve for x
    x = 102,869,602,765.28/405,726.69
  6. Step 6: Final answer
    x = 253,544.09

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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.