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Finding the Fourth Proportional to 212,209.90, 292,751.49 and 127,179.34

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Solution

The fourth proportional to 212,209.90, 292,751.49 and 127,179.34 is: 175,448.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,209.90 : 292,751.49 = 127,179.34 : x
  2. Step 2: Convert to fraction form
    212,209.90/292,751.49 = 127,179.34/x
  3. Step 3: Cross multiply
    212,209.90x = 292,751.49 × 127,179.34
  4. Step 4: Simplify right side
    212,209.90x = 37,231,941,282.22
  5. Step 5: Solve for x
    x = 37,231,941,282.22/212,209.90
  6. Step 6: Final answer
    x = 175,448.65

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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.