Home / 390,243,949.26-538,487,002.92-222,991,052.01

Finding the Fourth Proportional to 390,243,949.26, 538,487,002.92 and 222,991,052.01

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Solution

The fourth proportional to 390,243,949.26, 538,487,002.92 and 222,991,052.01 is: 307,699,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,243,949.26 : 538,487,002.92 = 222,991,052.01 : x
  2. Step 2: Convert to fraction form
    390,243,949.26/538,487,002.92 = 222,991,052.01/x
  3. Step 3: Cross multiply
    390,243,949.26x = 538,487,002.92 × 222,991,052.01
  4. Step 4: Simplify right side
    390,243,949.26x = 120,077,783,274,842,720
  5. Step 5: Solve for x
    x = 120,077,783,274,842,720/390,243,949.26
  6. Step 6: Final answer
    x = 307,699,282.72

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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.