Home / 642,072.80-962,882.40-221,250.80

Finding the Fourth Proportional to 642,072.80, 962,882.40 and 221,250.80

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Solution

The fourth proportional to 642,072.80, 962,882.40 and 221,250.80 is: 331,798.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,072.80 : 962,882.40 = 221,250.80 : x
  2. Step 2: Convert to fraction form
    642,072.80/962,882.40 = 221,250.80/x
  3. Step 3: Cross multiply
    642,072.80x = 962,882.40 × 221,250.80
  4. Step 4: Simplify right side
    642,072.80x = 213,038,501,305.92
  5. Step 5: Solve for x
    x = 213,038,501,305.92/642,072.80
  6. Step 6: Final answer
    x = 331,798.05

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1.5x scale

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.