Home / 355,660.18-531,218.89-321,874.42

Finding the Fourth Proportional to 355,660.18, 531,218.89 and 321,874.42

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Solution

The fourth proportional to 355,660.18, 531,218.89 and 321,874.42 is: 480,756.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,660.18 : 531,218.89 = 321,874.42 : x
  2. Step 2: Convert to fraction form
    355,660.18/531,218.89 = 321,874.42/x
  3. Step 3: Cross multiply
    355,660.18x = 531,218.89 × 321,874.42
  4. Step 4: Simplify right side
    355,660.18x = 170,985,772,111.79
  5. Step 5: Solve for x
    x = 170,985,772,111.79/355,660.18
  6. Step 6: Final answer
    x = 480,756.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.