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Finding the Fourth Proportional to 446,720, 616,473.60 and 245,516

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Solution

The fourth proportional to 446,720, 616,473.60 and 245,516 is: 338,812.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,720 : 616,473.60 = 245,516 : x
  2. Step 2: Convert to fraction form
    446,720/616,473.60 = 245,516/x
  3. Step 3: Cross multiply
    446,720x = 616,473.60 × 245,516
  4. Step 4: Simplify right side
    446,720x = 151,354,132,377.60
  5. Step 5: Solve for x
    x = 151,354,132,377.60/446,720
  6. Step 6: Final answer
    x = 338,812.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.