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Finding the Fourth Proportional to 459,021, 633,435.30 and 255,071.28

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Solution

The fourth proportional to 459,021, 633,435.30 and 255,071.28 is: 351,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,021 : 633,435.30 = 255,071.28 : x
  2. Step 2: Convert to fraction form
    459,021/633,435.30 = 255,071.28/x
  3. Step 3: Cross multiply
    459,021x = 633,435.30 × 255,071.28
  4. Step 4: Simplify right side
    459,021x = 161,571,152,768.18
  5. Step 5: Solve for x
    x = 161,571,152,768.18/459,021
  6. Step 6: Final answer
    x = 351,990.76

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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.