Home / 397,402,126.48-548,404,911.12-218,784,231.60

Finding the Fourth Proportional to 397,402,126.48, 548,404,911.12 and 218,784,231.60

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Solution

The fourth proportional to 397,402,126.48, 548,404,911.12 and 218,784,231.60 is: 301,916,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,402,126.48 : 548,404,911.12 = 218,784,231.60 : x
  2. Step 2: Convert to fraction form
    397,402,126.48/548,404,911.12 = 218,784,231.60/x
  3. Step 3: Cross multiply
    397,402,126.48x = 548,404,911.12 × 218,784,231.60
  4. Step 4: Simplify right side
    397,402,126.48x = 119,982,347,085,055,488
  5. Step 5: Solve for x
    x = 119,982,347,085,055,488/397,402,126.48
  6. Step 6: Final answer
    x = 301,916,721.35

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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.