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Finding the Fourth Proportional to 323,440.79, 485,386.30 and 133,902.14

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Solution

The fourth proportional to 323,440.79, 485,386.30 and 133,902.14 is: 200,946.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,440.79 : 485,386.30 = 133,902.14 : x
  2. Step 2: Convert to fraction form
    323,440.79/485,386.30 = 133,902.14/x
  3. Step 3: Cross multiply
    323,440.79x = 485,386.30 × 133,902.14
  4. Step 4: Simplify right side
    323,440.79x = 64,994,265,018.49
  5. Step 5: Solve for x
    x = 64,994,265,018.49/323,440.79
  6. Step 6: Final answer
    x = 200,946.41

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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.