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Finding the Fourth Proportional to 445,564.40, 668,346.60 and 130,053.20

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Solution

The fourth proportional to 445,564.40, 668,346.60 and 130,053.20 is: 195,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,564.40 : 668,346.60 = 130,053.20 : x
  2. Step 2: Convert to fraction form
    445,564.40/668,346.60 = 130,053.20/x
  3. Step 3: Cross multiply
    445,564.40x = 668,346.60 × 130,053.20
  4. Step 4: Simplify right side
    445,564.40x = 86,920,614,039.12
  5. Step 5: Solve for x
    x = 86,920,614,039.12/445,564.40
  6. Step 6: Final answer
    x = 195,079.80

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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.