Home / 487,013.22-672,065.71-272,155.05

Finding the Fourth Proportional to 487,013.22, 672,065.71 and 272,155.05

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Solution

The fourth proportional to 487,013.22, 672,065.71 and 272,155.05 is: 375,566.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,013.22 : 672,065.71 = 272,155.05 : x
  2. Step 2: Convert to fraction form
    487,013.22/672,065.71 = 272,155.05/x
  3. Step 3: Cross multiply
    487,013.22x = 672,065.71 × 272,155.05
  4. Step 4: Simplify right side
    487,013.22x = 182,906,076,227.95
  5. Step 5: Solve for x
    x = 182,906,076,227.95/487,013.22
  6. Step 6: Final answer
    x = 375,566.96

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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.