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Finding the Fourth Proportional to 486,971.88, 672,019.74 and 272,112.14

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Solution

The fourth proportional to 486,971.88, 672,019.74 and 272,112.14 is: 375,513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,971.88 : 672,019.74 = 272,112.14 : x
  2. Step 2: Convert to fraction form
    486,971.88/672,019.74 = 272,112.14/x
  3. Step 3: Cross multiply
    486,971.88x = 672,019.74 × 272,112.14
  4. Step 4: Simplify right side
    486,971.88x = 182,864,726,213.55
  5. Step 5: Solve for x
    x = 182,864,726,213.55/486,971.88
  6. Step 6: Final answer
    x = 375,513.93

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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.