Home / 390,170,073.69-538,450,226.19-213,964,388.46

Finding the Fourth Proportional to 390,170,073.69, 538,450,226.19 and 213,964,388.46

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Solution

The fourth proportional to 390,170,073.69, 538,450,226.19 and 213,964,388.46 is: 295,279,369.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,170,073.69 : 538,450,226.19 = 213,964,388.46 : x
  2. Step 2: Convert to fraction form
    390,170,073.69/538,450,226.19 = 213,964,388.46/x
  3. Step 3: Cross multiply
    390,170,073.69x = 538,450,226.19 × 213,964,388.46
  4. Step 4: Simplify right side
    390,170,073.69x = 115,209,173,362,892,048
  5. Step 5: Solve for x
    x = 115,209,173,362,892,048/390,170,073.69
  6. Step 6: Final answer
    x = 295,279,369.52

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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.