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Finding the Fourth Proportional to 490,215.62, 676,513.98 and 272,433.47

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Solution

The fourth proportional to 490,215.62, 676,513.98 and 272,433.47 is: 375,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,215.62 : 676,513.98 = 272,433.47 : x
  2. Step 2: Convert to fraction form
    490,215.62/676,513.98 = 272,433.47/x
  3. Step 3: Cross multiply
    490,215.62x = 676,513.98 × 272,433.47
  4. Step 4: Simplify right side
    490,215.62x = 184,305,046,330.17
  5. Step 5: Solve for x
    x = 184,305,046,330.17/490,215.62
  6. Step 6: Final answer
    x = 375,967.31

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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.