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Finding the Fourth Proportional to 404,291,878.90, 557,922,792.48 and 218,652,894.40

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Solution

The fourth proportional to 404,291,878.90, 557,922,792.48 and 218,652,894.40 is: 301,740,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,291,878.90 : 557,922,792.48 = 218,652,894.40 : x
  2. Step 2: Convert to fraction form
    404,291,878.90/557,922,792.48 = 218,652,894.40/x
  3. Step 3: Cross multiply
    404,291,878.90x = 557,922,792.48 × 218,652,894.40
  4. Step 4: Simplify right side
    404,291,878.90x = 121,991,433,427,482,560
  5. Step 5: Solve for x
    x = 121,991,433,427,482,560/404,291,878.90
  6. Step 6: Final answer
    x = 301,740,994.05

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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.