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Finding the Fourth Proportional to 445,510.40, 668,265.60 and 164,991.20

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Solution

The fourth proportional to 445,510.40, 668,265.60 and 164,991.20 is: 247,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,510.40 : 668,265.60 = 164,991.20 : x
  2. Step 2: Convert to fraction form
    445,510.40/668,265.60 = 164,991.20/x
  3. Step 3: Cross multiply
    445,510.40x = 668,265.60 × 164,991.20
  4. Step 4: Simplify right side
    445,510.40x = 110,257,943,262.72
  5. Step 5: Solve for x
    x = 110,257,943,262.72/445,510.40
  6. Step 6: Final answer
    x = 247,486.80

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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.