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Finding the Fourth Proportional to 487,674.61, 672,964.77 and 269,873.71

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Solution

The fourth proportional to 487,674.61, 672,964.77 and 269,873.71 is: 372,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,674.61 : 672,964.77 = 269,873.71 : x
  2. Step 2: Convert to fraction form
    487,674.61/672,964.77 = 269,873.71/x
  3. Step 3: Cross multiply
    487,674.61x = 672,964.77 × 269,873.71
  4. Step 4: Simplify right side
    487,674.61x = 181,615,499,179.20
  5. Step 5: Solve for x
    x = 181,615,499,179.20/487,674.61
  6. Step 6: Final answer
    x = 372,411.23

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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.