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Finding the Fourth Proportional to 205,298.80, 307,429.80 and 163,826.80

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Solution

The fourth proportional to 205,298.80, 307,429.80 and 163,826.80 is: 245,326.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,298.80 : 307,429.80 = 163,826.80 : x
  2. Step 2: Convert to fraction form
    205,298.80/307,429.80 = 163,826.80/x
  3. Step 3: Cross multiply
    205,298.80x = 307,429.80 × 163,826.80
  4. Step 4: Simplify right side
    205,298.80x = 50,365,240,358.64
  5. Step 5: Solve for x
    x = 50,365,240,358.64/205,298.80
  6. Step 6: Final answer
    x = 245,326.52

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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.