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Finding the Fourth Proportional to 208,320.30, 312,043.05 and 173,328.30

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Solution

The fourth proportional to 208,320.30, 312,043.05 and 173,328.30 is: 259,628.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,320.30 : 312,043.05 = 173,328.30 : x
  2. Step 2: Convert to fraction form
    208,320.30/312,043.05 = 173,328.30/x
  3. Step 3: Cross multiply
    208,320.30x = 312,043.05 × 173,328.30
  4. Step 4: Simplify right side
    208,320.30x = 54,085,891,383.32
  5. Step 5: Solve for x
    x = 54,085,891,383.32/208,320.30
  6. Step 6: Final answer
    x = 259,628.52

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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.