Home / 217,940.20-326,910.30-77,703.40

Finding the Fourth Proportional to 217,940.20, 326,910.30 and 77,703.40

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Solution

The fourth proportional to 217,940.20, 326,910.30 and 77,703.40 is: 116,555.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,940.20 : 326,910.30 = 77,703.40 : x
  2. Step 2: Convert to fraction form
    217,940.20/326,910.30 = 77,703.40/x
  3. Step 3: Cross multiply
    217,940.20x = 326,910.30 × 77,703.40
  4. Step 4: Simplify right side
    217,940.20x = 25,402,041,805.02
  5. Step 5: Solve for x
    x = 25,402,041,805.02/217,940.20
  6. Step 6: Final answer
    x = 116,555.10

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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.