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Finding the Fourth Proportional to 642,141.66, 963,135.81 and 168,863.88

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Solution

The fourth proportional to 642,141.66, 963,135.81 and 168,863.88 is: 253,275.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,141.66 : 963,135.81 = 168,863.88 : x
  2. Step 2: Convert to fraction form
    642,141.66/963,135.81 = 168,863.88/x
  3. Step 3: Cross multiply
    642,141.66x = 963,135.81 × 168,863.88
  4. Step 4: Simplify right side
    642,141.66x = 162,638,849,843.54
  5. Step 5: Solve for x
    x = 162,638,849,843.54/642,141.66
  6. Step 6: Final answer
    x = 253,275.66

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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.