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Finding the Fourth Proportional to 323,139.40, 484,730.70 and 109,904.20

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Solution

The fourth proportional to 323,139.40, 484,730.70 and 109,904.20 is: 164,863.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,139.40 : 484,730.70 = 109,904.20 : x
  2. Step 2: Convert to fraction form
    323,139.40/484,730.70 = 109,904.20/x
  3. Step 3: Cross multiply
    323,139.40x = 484,730.70 × 109,904.20
  4. Step 4: Simplify right side
    323,139.40x = 53,273,939,798.94
  5. Step 5: Solve for x
    x = 53,273,939,798.94/323,139.40
  6. Step 6: Final answer
    x = 164,863.65

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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.