Home / 390,482,857.62-538,864,865.15-214,273,801.80

Finding the Fourth Proportional to 390,482,857.62, 538,864,865.15 and 214,273,801.80

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Solution

The fourth proportional to 390,482,857.62, 538,864,865.15 and 214,273,801.80 is: 295,697,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,857.62 : 538,864,865.15 = 214,273,801.80 : x
  2. Step 2: Convert to fraction form
    390,482,857.62/538,864,865.15 = 214,273,801.80/x
  3. Step 3: Cross multiply
    390,482,857.62x = 538,864,865.15 × 214,273,801.80
  4. Step 4: Simplify right side
    390,482,857.62x = 115,464,623,311,063,456
  5. Step 5: Solve for x
    x = 115,464,623,311,063,456/390,482,857.62
  6. Step 6: Final answer
    x = 295,697,035.24

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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.