Home / 642,065.40-963,213.30-268,126.20

Finding the Fourth Proportional to 642,065.40, 963,213.30 and 268,126.20

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Solution

The fourth proportional to 642,065.40, 963,213.30 and 268,126.20 is: 402,237.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,065.40 : 963,213.30 = 268,126.20 : x
  2. Step 2: Convert to fraction form
    642,065.40/963,213.30 = 268,126.20/x
  3. Step 3: Cross multiply
    642,065.40x = 963,213.30 × 268,126.20
  4. Step 4: Simplify right side
    642,065.40x = 258,262,721,918.46
  5. Step 5: Solve for x
    x = 258,262,721,918.46/642,065.40
  6. Step 6: Final answer
    x = 402,237.41

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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.