Home / 428,996.16-643,111.85-162,943.50

Finding the Fourth Proportional to 428,996.16, 643,111.85 and 162,943.50

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Solution

The fourth proportional to 428,996.16, 643,111.85 and 162,943.50 is: 244,270.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,996.16 : 643,111.85 = 162,943.50 : x
  2. Step 2: Convert to fraction form
    428,996.16/643,111.85 = 162,943.50/x
  3. Step 3: Cross multiply
    428,996.16x = 643,111.85 × 162,943.50
  4. Step 4: Simplify right side
    428,996.16x = 104,790,894,915.76
  5. Step 5: Solve for x
    x = 104,790,894,915.76/428,996.16
  6. Step 6: Final answer
    x = 244,270.01

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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.