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Finding the Fourth Proportional to 642,393.22, 963,515.24 and 169,115.46

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Solution

The fourth proportional to 642,393.22, 963,515.24 and 169,115.46 is: 253,653.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,393.22 : 963,515.24 = 169,115.46 : x
  2. Step 2: Convert to fraction form
    642,393.22/963,515.24 = 169,115.46/x
  3. Step 3: Cross multiply
    642,393.22x = 963,515.24 × 169,115.46
  4. Step 4: Simplify right side
    642,393.22x = 162,945,323,029.61
  5. Step 5: Solve for x
    x = 162,945,323,029.61/642,393.22
  6. Step 6: Final answer
    x = 253,653.55

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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.