Home / 386,897.28-533,649.60-315,277.44

Finding the Fourth Proportional to 386,897.28, 533,649.60 and 315,277.44

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Solution

The fourth proportional to 386,897.28, 533,649.60 and 315,277.44 is: 434,863.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,897.28 : 533,649.60 = 315,277.44 : x
  2. Step 2: Convert to fraction form
    386,897.28/533,649.60 = 315,277.44/x
  3. Step 3: Cross multiply
    386,897.28x = 533,649.60 × 315,277.44
  4. Step 4: Simplify right side
    386,897.28x = 168,247,679,745.02
  5. Step 5: Solve for x
    x = 168,247,679,745.02/386,897.28
  6. Step 6: Final answer
    x = 434,863.95

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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.