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Finding the Fourth Proportional to 493,880.80, 740,853.60 and 138,906.40

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Solution

The fourth proportional to 493,880.80, 740,853.60 and 138,906.40 is: 208,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,880.80 : 740,853.60 = 138,906.40 : x
  2. Step 2: Convert to fraction form
    493,880.80/740,853.60 = 138,906.40/x
  3. Step 3: Cross multiply
    493,880.80x = 740,853.60 × 138,906.40
  4. Step 4: Simplify right side
    493,880.80x = 102,909,306,503.04
  5. Step 5: Solve for x
    x = 102,909,306,503.04/493,880.80
  6. Step 6: Final answer
    x = 208,368.71

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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.