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Finding the Fourth Proportional to 642,937.69, 964,311.76 and 169,656.31

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Solution

The fourth proportional to 642,937.69, 964,311.76 and 169,656.31 is: 254,459.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,937.69 : 964,311.76 = 169,656.31 : x
  2. Step 2: Convert to fraction form
    642,937.69/964,311.76 = 169,656.31/x
  3. Step 3: Cross multiply
    642,937.69x = 964,311.76 × 169,656.31
  4. Step 4: Simplify right side
    642,937.69x = 163,601,574,891.21
  5. Step 5: Solve for x
    x = 163,601,574,891.21/642,937.69
  6. Step 6: Final answer
    x = 254,459.46

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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.