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Finding the Fourth Proportional to 422,657.69, 633,919.10 and 156,357.63

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Solution

The fourth proportional to 422,657.69, 633,919.10 and 156,357.63 is: 234,511.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,657.69 : 633,919.10 = 156,357.63 : x
  2. Step 2: Convert to fraction form
    422,657.69/633,919.10 = 156,357.63/x
  3. Step 3: Cross multiply
    422,657.69x = 633,919.10 × 156,357.63
  4. Step 4: Simplify right side
    422,657.69x = 99,118,087,305.94
  5. Step 5: Solve for x
    x = 99,118,087,305.94/422,657.69
  6. Step 6: Final answer
    x = 234,511.50

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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.