Home / 642,909.64-964,429.26-169,627.72

Finding the Fourth Proportional to 642,909.64, 964,429.26 and 169,627.72

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Solution

The fourth proportional to 642,909.64, 964,429.26 and 169,627.72 is: 254,458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,909.64 : 964,429.26 = 169,627.72 : x
  2. Step 2: Convert to fraction form
    642,909.64/964,429.26 = 169,627.72/x
  3. Step 3: Cross multiply
    642,909.64x = 964,429.26 × 169,627.72
  4. Step 4: Simplify right side
    642,909.64x = 163,593,936,475.09
  5. Step 5: Solve for x
    x = 163,593,936,475.09/642,909.64
  6. Step 6: Final answer
    x = 254,458.68

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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.