Home / 285,644,012.64-428,601,422.21-138,008,814.68

Finding the Fourth Proportional to 285,644,012.64, 428,601,422.21 and 138,008,814.68

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Solution

The fourth proportional to 285,644,012.64, 428,601,422.21 and 138,008,814.68 is: 207,078,642.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,644,012.64 : 428,601,422.21 = 138,008,814.68 : x
  2. Step 2: Convert to fraction form
    285,644,012.64/428,601,422.21 = 138,008,814.68/x
  3. Step 3: Cross multiply
    285,644,012.64x = 428,601,422.21 × 138,008,814.68
  4. Step 4: Simplify right side
    285,644,012.64x = 59,150,774,246,531,280
  5. Step 5: Solve for x
    x = 59,150,774,246,531,280/285,644,012.64
  6. Step 6: Final answer
    x = 207,078,642.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.