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Finding the Fourth Proportional to 323,417.60, 485,126.40 and 163,985.30

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Solution

The fourth proportional to 323,417.60, 485,126.40 and 163,985.30 is: 245,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,417.60 : 485,126.40 = 163,985.30 : x
  2. Step 2: Convert to fraction form
    323,417.60/485,126.40 = 163,985.30/x
  3. Step 3: Cross multiply
    323,417.60x = 485,126.40 × 163,985.30
  4. Step 4: Simplify right side
    323,417.60x = 79,553,598,241.92
  5. Step 5: Solve for x
    x = 79,553,598,241.92/323,417.60
  6. Step 6: Final answer
    x = 245,977.95

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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.