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Finding the Fourth Proportional to 304,469.60, 420,168.78 and 168,512.90

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Solution

The fourth proportional to 304,469.60, 420,168.78 and 168,512.90 is: 232,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,469.60 : 420,168.78 = 168,512.90 : x
  2. Step 2: Convert to fraction form
    304,469.60/420,168.78 = 168,512.90/x
  3. Step 3: Cross multiply
    304,469.60x = 420,168.78 × 168,512.90
  4. Step 4: Simplify right side
    304,469.60x = 70,803,859,607.26
  5. Step 5: Solve for x
    x = 70,803,859,607.26/304,469.60
  6. Step 6: Final answer
    x = 232,548.21

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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.