Home / 390,640,843.22-539,084,954.16-212,024,795.60

Finding the Fourth Proportional to 390,640,843.22, 539,084,954.16 and 212,024,795.60

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Solution

The fourth proportional to 390,640,843.22, 539,084,954.16 and 212,024,795.60 is: 292,594,538.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,640,843.22 : 539,084,954.16 = 212,024,795.60 : x
  2. Step 2: Convert to fraction form
    390,640,843.22/539,084,954.16 = 212,024,795.60/x
  3. Step 3: Cross multiply
    390,640,843.22x = 539,084,954.16 × 212,024,795.60
  4. Step 4: Simplify right side
    390,640,843.22x = 114,299,377,216,809,360
  5. Step 5: Solve for x
    x = 114,299,377,216,809,360/390,640,843.22
  6. Step 6: Final answer
    x = 292,594,538.44

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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.