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Finding the Fourth Proportional to 325,695.60, 488,251.80 and 213,429.60

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Solution

The fourth proportional to 325,695.60, 488,251.80 and 213,429.60 is: 319,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,695.60 : 488,251.80 = 213,429.60 : x
  2. Step 2: Convert to fraction form
    325,695.60/488,251.80 = 213,429.60/x
  3. Step 3: Cross multiply
    325,695.60x = 488,251.80 × 213,429.60
  4. Step 4: Simplify right side
    325,695.60x = 104,207,386,373.28
  5. Step 5: Solve for x
    x = 104,207,386,373.28/325,695.60
  6. Step 6: Final answer
    x = 319,953.31

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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.