Home / 487,139.37-672,221.77-269,342.42

Finding the Fourth Proportional to 487,139.37, 672,221.77 and 269,342.42

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Solution

The fourth proportional to 487,139.37, 672,221.77 and 269,342.42 is: 371,675.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,139.37 : 672,221.77 = 269,342.42 : x
  2. Step 2: Convert to fraction form
    487,139.37/672,221.77 = 269,342.42/x
  3. Step 3: Cross multiply
    487,139.37x = 672,221.77 × 269,342.42
  4. Step 4: Simplify right side
    487,139.37x = 181,057,834,274.02
  5. Step 5: Solve for x
    x = 181,057,834,274.02/487,139.37
  6. Step 6: Final answer
    x = 371,675.64

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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.