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Finding the Fourth Proportional to 552,105.18, 761,900.57 and 310,388.83

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Solution

The fourth proportional to 552,105.18, 761,900.57 and 310,388.83 is: 428,334.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,105.18 : 761,900.57 = 310,388.83 : x
  2. Step 2: Convert to fraction form
    552,105.18/761,900.57 = 310,388.83/x
  3. Step 3: Cross multiply
    552,105.18x = 761,900.57 × 310,388.83
  4. Step 4: Simplify right side
    552,105.18x = 236,485,424,946.69
  5. Step 5: Solve for x
    x = 236,485,424,946.69/552,105.18
  6. Step 6: Final answer
    x = 428,334.01

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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.