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Finding the Fourth Proportional to 445,564.74, 668,386.40 and 125,719.43

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Solution

The fourth proportional to 445,564.74, 668,386.40 and 125,719.43 is: 188,590.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,564.74 : 668,386.40 = 125,719.43 : x
  2. Step 2: Convert to fraction form
    445,564.74/668,386.40 = 125,719.43/x
  3. Step 3: Cross multiply
    445,564.74x = 668,386.40 × 125,719.43
  4. Step 4: Simplify right side
    445,564.74x = 84,029,158,270.12
  5. Step 5: Solve for x
    x = 84,029,158,270.12/445,564.74
  6. Step 6: Final answer
    x = 188,590.23

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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.