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Finding the Fourth Proportional to 642,461.86, 963,605.31 and 169,107.58

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Solution

The fourth proportional to 642,461.86, 963,605.31 and 169,107.58 is: 253,638.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,461.86 : 963,605.31 = 169,107.58 : x
  2. Step 2: Convert to fraction form
    642,461.86/963,605.31 = 169,107.58/x
  3. Step 3: Cross multiply
    642,461.86x = 963,605.31 × 169,107.58
  4. Step 4: Simplify right side
    642,461.86x = 162,952,962,049.25
  5. Step 5: Solve for x
    x = 162,952,962,049.25/642,461.86
  6. Step 6: Final answer
    x = 253,638.34

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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.