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Finding the Fourth Proportional to 528,172.16, 792,761.28 and 327,886.40

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Solution

The fourth proportional to 528,172.16, 792,761.28 and 327,886.40 is: 492,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,172.16 : 792,761.28 = 327,886.40 : x
  2. Step 2: Convert to fraction form
    528,172.16/792,761.28 = 327,886.40/x
  3. Step 3: Cross multiply
    528,172.16x = 792,761.28 × 327,886.40
  4. Step 4: Simplify right side
    528,172.16x = 259,935,642,158.59
  5. Step 5: Solve for x
    x = 259,935,642,158.59/528,172.16
  6. Step 6: Final answer
    x = 492,141.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.