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Finding the Fourth Proportional to 398,992, 598,487.28 and 232,663.36

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Solution

The fourth proportional to 398,992, 598,487.28 and 232,663.36 is: 348,994.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,992 : 598,487.28 = 232,663.36 : x
  2. Step 2: Convert to fraction form
    398,992/598,487.28 = 232,663.36/x
  3. Step 3: Cross multiply
    398,992x = 598,487.28 × 232,663.36
  4. Step 4: Simplify right side
    398,992x = 139,246,061,482.06
  5. Step 5: Solve for x
    x = 139,246,061,482.06/398,992
  6. Step 6: Final answer
    x = 348,994.62

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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.