Home / 642,142.44-963,277.02-221,362.92

Finding the Fourth Proportional to 642,142.44, 963,277.02 and 221,362.92

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Solution

The fourth proportional to 642,142.44, 963,277.02 and 221,362.92 is: 332,066.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,142.44 : 963,277.02 = 221,362.92 : x
  2. Step 2: Convert to fraction form
    642,142.44/963,277.02 = 221,362.92/x
  3. Step 3: Cross multiply
    642,142.44x = 963,277.02 × 221,362.92
  4. Step 4: Simplify right side
    642,142.44x = 213,233,813,916.10
  5. Step 5: Solve for x
    x = 213,233,813,916.10/642,142.44
  6. Step 6: Final answer
    x = 332,066.22

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Double scale
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Similar ratio
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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.