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Finding the Fourth Proportional to 547,100.30, 755,124.38 and 320,818.70

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Solution

The fourth proportional to 547,100.30, 755,124.38 and 320,818.70 is: 442,803.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,100.30 : 755,124.38 = 320,818.70 : x
  2. Step 2: Convert to fraction form
    547,100.30/755,124.38 = 320,818.70/x
  3. Step 3: Cross multiply
    547,100.30x = 755,124.38 × 320,818.70
  4. Step 4: Simplify right side
    547,100.30x = 242,258,016,550.19
  5. Step 5: Solve for x
    x = 242,258,016,550.19/547,100.30
  6. Step 6: Final answer
    x = 442,803.67

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1.5x scale

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.