Home / 390,482,842.11-538,864,843.80-214,273,786.26

Finding the Fourth Proportional to 390,482,842.11, 538,864,843.80 and 214,273,786.26

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Solution

The fourth proportional to 390,482,842.11, 538,864,843.80 and 214,273,786.26 is: 295,697,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,842.11 : 538,864,843.80 = 214,273,786.26 : x
  2. Step 2: Convert to fraction form
    390,482,842.11/538,864,843.80 = 214,273,786.26/x
  3. Step 3: Cross multiply
    390,482,842.11x = 538,864,843.80 × 214,273,786.26
  4. Step 4: Simplify right side
    390,482,842.11x = 115,464,610,363,429,472
  5. Step 5: Solve for x
    x = 115,464,610,363,429,472/390,482,842.11
  6. Step 6: Final answer
    x = 295,697,013.83

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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.