Home / 487,143.49-672,211.84-272,278.64

Finding the Fourth Proportional to 487,143.49, 672,211.84 and 272,278.64

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Solution

The fourth proportional to 487,143.49, 672,211.84 and 272,278.64 is: 375,718.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,143.49 : 672,211.84 = 272,278.64 : x
  2. Step 2: Convert to fraction form
    487,143.49/672,211.84 = 272,278.64/x
  3. Step 3: Cross multiply
    487,143.49x = 672,211.84 × 272,278.64
  4. Step 4: Simplify right side
    487,143.49x = 183,028,925,587.10
  5. Step 5: Solve for x
    x = 183,028,925,587.10/487,143.49
  6. Step 6: Final answer
    x = 375,718.71

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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.