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Finding the Fourth Proportional to 386,408.61, 532,627.74 and 304,603.47

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Solution

The fourth proportional to 386,408.61, 532,627.74 and 304,603.47 is: 419,867.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,408.61 : 532,627.74 = 304,603.47 : x
  2. Step 2: Convert to fraction form
    386,408.61/532,627.74 = 304,603.47/x
  3. Step 3: Cross multiply
    386,408.61x = 532,627.74 × 304,603.47
  4. Step 4: Simplify right side
    386,408.61x = 162,240,257,822.26
  5. Step 5: Solve for x
    x = 162,240,257,822.26/386,408.61
  6. Step 6: Final answer
    x = 419,867.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.