Home / 487,015.26-672,079.50-272,155.32

Finding the Fourth Proportional to 487,015.26, 672,079.50 and 272,155.32

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Solution

The fourth proportional to 487,015.26, 672,079.50 and 272,155.32 is: 375,573.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,015.26 : 672,079.50 = 272,155.32 : x
  2. Step 2: Convert to fraction form
    487,015.26/672,079.50 = 272,155.32/x
  3. Step 3: Cross multiply
    487,015.26x = 672,079.50 × 272,155.32
  4. Step 4: Simplify right side
    487,015.26x = 182,910,011,387.94
  5. Step 5: Solve for x
    x = 182,910,011,387.94/487,015.26
  6. Step 6: Final answer
    x = 375,573.47

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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.