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Finding the Fourth Proportional to 355,228.70, 532,383.74 and 265,780.40

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Solution

The fourth proportional to 355,228.70, 532,383.74 and 265,780.40 is: 398,326.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,228.70 : 532,383.74 = 265,780.40 : x
  2. Step 2: Convert to fraction form
    355,228.70/532,383.74 = 265,780.40/x
  3. Step 3: Cross multiply
    355,228.70x = 532,383.74 × 265,780.40
  4. Step 4: Simplify right side
    355,228.70x = 141,497,163,370.70
  5. Step 5: Solve for x
    x = 141,497,163,370.70/355,228.70
  6. Step 6: Final answer
    x = 398,326.95

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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.