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Finding the Fourth Proportional to 507,995.11, 701,064.84 and 281,640.61

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Solution

The fourth proportional to 507,995.11, 701,064.84 and 281,640.61 is: 388,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,995.11 : 701,064.84 = 281,640.61 : x
  2. Step 2: Convert to fraction form
    507,995.11/701,064.84 = 281,640.61/x
  3. Step 3: Cross multiply
    507,995.11x = 701,064.84 × 281,640.61
  4. Step 4: Simplify right side
    507,995.11x = 197,448,329,187.15
  5. Step 5: Solve for x
    x = 197,448,329,187.15/507,995.11
  6. Step 6: Final answer
    x = 388,681.55

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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.