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Finding the Fourth Proportional to 487,154.52, 672,273 and 285,950.52

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Solution

The fourth proportional to 487,154.52, 672,273 and 285,950.52 is: 394,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,154.52 : 672,273 = 285,950.52 : x
  2. Step 2: Convert to fraction form
    487,154.52/672,273 = 285,950.52/x
  3. Step 3: Cross multiply
    487,154.52x = 672,273 × 285,950.52
  4. Step 4: Simplify right side
    487,154.52x = 192,236,813,931.96
  5. Step 5: Solve for x
    x = 192,236,813,931.96/487,154.52
  6. Step 6: Final answer
    x = 394,611.58

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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.