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Finding the Fourth Proportional to 308,398.42, 425,460.90 and 240,297.16

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Solution

The fourth proportional to 308,398.42, 425,460.90 and 240,297.16 is: 331,509.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,398.42 : 425,460.90 = 240,297.16 : x
  2. Step 2: Convert to fraction form
    308,398.42/425,460.90 = 240,297.16/x
  3. Step 3: Cross multiply
    308,398.42x = 425,460.90 × 240,297.16
  4. Step 4: Simplify right side
    308,398.42x = 102,237,045,961.04
  5. Step 5: Solve for x
    x = 102,237,045,961.04/308,398.42
  6. Step 6: Final answer
    x = 331,509.63

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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.