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Finding the Fourth Proportional to 487,668.74, 672,956.71 and 269,867.84

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Solution

The fourth proportional to 487,668.74, 672,956.71 and 269,867.84 is: 372,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,668.74 : 672,956.71 = 269,867.84 : x
  2. Step 2: Convert to fraction form
    487,668.74/672,956.71 = 269,867.84/x
  3. Step 3: Cross multiply
    487,668.74x = 672,956.71 × 269,867.84
  4. Step 4: Simplify right side
    487,668.74x = 181,609,369,701.75
  5. Step 5: Solve for x
    x = 181,609,369,701.75/487,668.74
  6. Step 6: Final answer
    x = 372,403.14

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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.