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Finding the Fourth Proportional to 445,367.60, 668,051.40 and 339,079.40

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Solution

The fourth proportional to 445,367.60, 668,051.40 and 339,079.40 is: 508,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,367.60 : 668,051.40 = 339,079.40 : x
  2. Step 2: Convert to fraction form
    445,367.60/668,051.40 = 339,079.40/x
  3. Step 3: Cross multiply
    445,367.60x = 668,051.40 × 339,079.40
  4. Step 4: Simplify right side
    445,367.60x = 226,522,467,881.16
  5. Step 5: Solve for x
    x = 226,522,467,881.16/445,367.60
  6. Step 6: Final answer
    x = 508,619.10

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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.