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Finding the Fourth Proportional to 219,477.20, 302,903.11 and 123,990.04

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Solution

The fourth proportional to 219,477.20, 302,903.11 and 123,990.04 is: 171,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,477.20 : 302,903.11 = 123,990.04 : x
  2. Step 2: Convert to fraction form
    219,477.20/302,903.11 = 123,990.04/x
  3. Step 3: Cross multiply
    219,477.20x = 302,903.11 × 123,990.04
  4. Step 4: Simplify right side
    219,477.20x = 37,556,968,725.02
  5. Step 5: Solve for x
    x = 37,556,968,725.02/219,477.20
  6. Step 6: Final answer
    x = 171,120.14

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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.