Home / 487,107.71-672,240.17-272,256.83

Finding the Fourth Proportional to 487,107.71, 672,240.17 and 272,256.83

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Solution

The fourth proportional to 487,107.71, 672,240.17 and 272,256.83 is: 375,732.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,107.71 : 672,240.17 = 272,256.83 : x
  2. Step 2: Convert to fraction form
    487,107.71/672,240.17 = 272,256.83/x
  3. Step 3: Cross multiply
    487,107.71x = 672,240.17 × 272,256.83
  4. Step 4: Simplify right side
    487,107.71x = 183,021,976,321.58
  5. Step 5: Solve for x
    x = 183,021,976,321.58/487,107.71
  6. Step 6: Final answer
    x = 375,732.05

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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.