Home / 487,019.39-672,084.80-272,159.40

Finding the Fourth Proportional to 487,019.39, 672,084.80 and 272,159.40

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Solution

The fourth proportional to 487,019.39, 672,084.80 and 272,159.40 is: 375,578.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,019.39 : 672,084.80 = 272,159.40 : x
  2. Step 2: Convert to fraction form
    487,019.39/672,084.80 = 272,159.40/x
  3. Step 3: Cross multiply
    487,019.39x = 672,084.80 × 272,159.40
  4. Step 4: Simplify right side
    487,019.39x = 182,914,195,917.12
  5. Step 5: Solve for x
    x = 182,914,195,917.12/487,019.39
  6. Step 6: Final answer
    x = 375,578.88

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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.