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Finding the Fourth Proportional to 487,443.54, 672,734.61 and 272,595.54

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Solution

The fourth proportional to 487,443.54, 672,734.61 and 272,595.54 is: 376,216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,443.54 : 672,734.61 = 272,595.54 : x
  2. Step 2: Convert to fraction form
    487,443.54/672,734.61 = 272,595.54/x
  3. Step 3: Cross multiply
    487,443.54x = 672,734.61 × 272,595.54
  4. Step 4: Simplify right side
    487,443.54x = 183,384,454,289.64
  5. Step 5: Solve for x
    x = 183,384,454,289.64/487,443.54
  6. Step 6: Final answer
    x = 376,216.81

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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.