Home / 390,498,903.54-538,896,717.72-214,285,357.62

Finding the Fourth Proportional to 390,498,903.54, 538,896,717.72 and 214,285,357.62

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Solution

The fourth proportional to 390,498,903.54, 538,896,717.72 and 214,285,357.62 is: 295,718,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,498,903.54 : 538,896,717.72 = 214,285,357.62 : x
  2. Step 2: Convert to fraction form
    390,498,903.54/538,896,717.72 = 214,285,357.62/x
  3. Step 3: Cross multiply
    390,498,903.54x = 538,896,717.72 × 214,285,357.62
  4. Step 4: Simplify right side
    390,498,903.54x = 115,477,675,876,874,400
  5. Step 5: Solve for x
    x = 115,477,675,876,874,400/390,498,903.54
  6. Step 6: Final answer
    x = 295,718,310.17

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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.