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Finding the Fourth Proportional to 375,583.72, 518,802.42 and 279,924.34

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Solution

The fourth proportional to 375,583.72, 518,802.42 and 279,924.34 is: 386,665.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,583.72 : 518,802.42 = 279,924.34 : x
  2. Step 2: Convert to fraction form
    375,583.72/518,802.42 = 279,924.34/x
  3. Step 3: Cross multiply
    375,583.72x = 518,802.42 × 279,924.34
  4. Step 4: Simplify right side
    375,583.72x = 145,225,425,008.90
  5. Step 5: Solve for x
    x = 145,225,425,008.90/375,583.72
  6. Step 6: Final answer
    x = 386,665.92

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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.