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Finding the Fourth Proportional to 355,432.20, 532,717.20 and 261,062.88

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Solution

The fourth proportional to 355,432.20, 532,717.20 and 261,062.88 is: 391,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,432.20 : 532,717.20 = 261,062.88 : x
  2. Step 2: Convert to fraction form
    355,432.20/532,717.20 = 261,062.88/x
  3. Step 3: Cross multiply
    355,432.20x = 532,717.20 × 261,062.88
  4. Step 4: Simplify right side
    355,432.20x = 139,072,686,457.54
  5. Step 5: Solve for x
    x = 139,072,686,457.54/355,432.20
  6. Step 6: Final answer
    x = 391,277.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.