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Finding the Fourth Proportional to 487,872.75, 673,231.77 and 270,066.63

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Solution

The fourth proportional to 487,872.75, 673,231.77 and 270,066.63 is: 372,673.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,872.75 : 673,231.77 = 270,066.63 : x
  2. Step 2: Convert to fraction form
    487,872.75/673,231.77 = 270,066.63/x
  3. Step 3: Cross multiply
    487,872.75x = 673,231.77 × 270,066.63
  4. Step 4: Simplify right side
    487,872.75x = 181,817,435,332.84
  5. Step 5: Solve for x
    x = 181,817,435,332.84/487,872.75
  6. Step 6: Final answer
    x = 372,673.89

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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.