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Finding the Fourth Proportional to 376,906, 520,130.28 and 207,151.06

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Solution

The fourth proportional to 376,906, 520,130.28 and 207,151.06 is: 285,868.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,906 : 520,130.28 = 207,151.06 : x
  2. Step 2: Convert to fraction form
    376,906/520,130.28 = 207,151.06/x
  3. Step 3: Cross multiply
    376,906x = 520,130.28 × 207,151.06
  4. Step 4: Simplify right side
    376,906x = 107,745,538,840.10
  5. Step 5: Solve for x
    x = 107,745,538,840.10/376,906
  6. Step 6: Final answer
    x = 285,868.46

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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.