Home / 390,482,843.59-538,864,845.87-214,273,787.77

Finding the Fourth Proportional to 390,482,843.59, 538,864,845.87 and 214,273,787.77

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Solution

The fourth proportional to 390,482,843.59, 538,864,845.87 and 214,273,787.77 is: 295,697,015.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,843.59 : 538,864,845.87 = 214,273,787.77 : x
  2. Step 2: Convert to fraction form
    390,482,843.59/538,864,845.87 = 214,273,787.77/x
  3. Step 3: Cross multiply
    390,482,843.59x = 538,864,845.87 × 214,273,787.77
  4. Step 4: Simplify right side
    390,482,843.59x = 115,464,611,620,662,144
  5. Step 5: Solve for x
    x = 115,464,611,620,662,144/390,482,843.59
  6. Step 6: Final answer
    x = 295,697,015.93

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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.