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Finding the Fourth Proportional to 445,314.60, 668,052.90 and 145,711.80

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Solution

The fourth proportional to 445,314.60, 668,052.90 and 145,711.80 is: 218,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,314.60 : 668,052.90 = 145,711.80 : x
  2. Step 2: Convert to fraction form
    445,314.60/668,052.90 = 145,711.80/x
  3. Step 3: Cross multiply
    445,314.60x = 668,052.90 × 145,711.80
  4. Step 4: Simplify right side
    445,314.60x = 97,343,190,554.22
  5. Step 5: Solve for x
    x = 97,343,190,554.22/445,314.60
  6. Step 6: Final answer
    x = 218,594.20

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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.