Home / 209,043.39-288,480.59-123,005.65

Finding the Fourth Proportional to 209,043.39, 288,480.59 and 123,005.65

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Solution

The fourth proportional to 209,043.39, 288,480.59 and 123,005.65 is: 169,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,043.39 : 288,480.59 = 123,005.65 : x
  2. Step 2: Convert to fraction form
    209,043.39/288,480.59 = 123,005.65/x
  3. Step 3: Cross multiply
    209,043.39x = 288,480.59 × 123,005.65
  4. Step 4: Simplify right side
    209,043.39x = 35,484,742,485.33
  5. Step 5: Solve for x
    x = 35,484,742,485.33/209,043.39
  6. Step 6: Final answer
    x = 169,748.22

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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.