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Finding the Fourth Proportional to 487,441.69, 672,656.94 and 269,644.68

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Solution

The fourth proportional to 487,441.69, 672,656.94 and 269,644.68 is: 372,102.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,441.69 : 672,656.94 = 269,644.68 : x
  2. Step 2: Convert to fraction form
    487,441.69/672,656.94 = 269,644.68/x
  3. Step 3: Cross multiply
    487,441.69x = 672,656.94 × 269,644.68
  4. Step 4: Simplify right side
    487,441.69x = 181,378,365,336.08
  5. Step 5: Solve for x
    x = 181,378,365,336.08/487,441.69
  6. Step 6: Final answer
    x = 372,102.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.