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Finding the Fourth Proportional to 326,221.20, 488,410.20 and 317,005.20

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Solution

The fourth proportional to 326,221.20, 488,410.20 and 317,005.20 is: 474,612.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,221.20 : 488,410.20 = 317,005.20 : x
  2. Step 2: Convert to fraction form
    326,221.20/488,410.20 = 317,005.20/x
  3. Step 3: Cross multiply
    326,221.20x = 488,410.20 × 317,005.20
  4. Step 4: Simplify right side
    326,221.20x = 154,828,573,133.04
  5. Step 5: Solve for x
    x = 154,828,573,133.04/326,221.20
  6. Step 6: Final answer
    x = 474,612.24

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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.