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Finding the Fourth Proportional to 401,817.80, 602,726.70 and 165,081.80

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Solution

The fourth proportional to 401,817.80, 602,726.70 and 165,081.80 is: 247,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,817.80 : 602,726.70 = 165,081.80 : x
  2. Step 2: Convert to fraction form
    401,817.80/602,726.70 = 165,081.80/x
  3. Step 3: Cross multiply
    401,817.80x = 602,726.70 × 165,081.80
  4. Step 4: Simplify right side
    401,817.80x = 99,499,208,544.06
  5. Step 5: Solve for x
    x = 99,499,208,544.06/401,817.80
  6. Step 6: Final answer
    x = 247,622.70

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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.