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Finding the Fourth Proportional to 664,335, 996,493.14 and 309,150.36

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Solution

The fourth proportional to 664,335, 996,493.14 and 309,150.36 is: 463,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,335 : 996,493.14 = 309,150.36 : x
  2. Step 2: Convert to fraction form
    664,335/996,493.14 = 309,150.36/x
  3. Step 3: Cross multiply
    664,335x = 996,493.14 × 309,150.36
  4. Step 4: Simplify right side
    664,335x = 308,066,212,968.53
  5. Step 5: Solve for x
    x = 308,066,212,968.53/664,335
  6. Step 6: Final answer
    x = 463,721.18

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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.