Home / 285,644,008.89-428,601,416.58-138,008,810.93

Finding the Fourth Proportional to 285,644,008.89, 428,601,416.58 and 138,008,810.93

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Solution

The fourth proportional to 285,644,008.89, 428,601,416.58 and 138,008,810.93 is: 207,078,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,644,008.89 : 428,601,416.58 = 138,008,810.93 : x
  2. Step 2: Convert to fraction form
    285,644,008.89/428,601,416.58 = 138,008,810.93/x
  3. Step 3: Cross multiply
    285,644,008.89x = 428,601,416.58 × 138,008,810.93
  4. Step 4: Simplify right side
    285,644,008.89x = 59,150,771,862,976,384
  5. Step 5: Solve for x
    x = 59,150,771,862,976,384/285,644,008.89
  6. Step 6: Final answer
    x = 207,078,636.42

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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.