Home / 487,151.47-672,222.90-272,286.64

Finding the Fourth Proportional to 487,151.47, 672,222.90 and 272,286.64

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Solution

The fourth proportional to 487,151.47, 672,222.90 and 272,286.64 is: 375,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,151.47 : 672,222.90 = 272,286.64 : x
  2. Step 2: Convert to fraction form
    487,151.47/672,222.90 = 272,286.64/x
  3. Step 3: Cross multiply
    487,151.47x = 672,222.90 × 272,286.64
  4. Step 4: Simplify right side
    487,151.47x = 183,037,314,772.06
  5. Step 5: Solve for x
    x = 183,037,314,772.06/487,151.47
  6. Step 6: Final answer
    x = 375,729.78

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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.