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Finding the Fourth Proportional to 297,027.60, 445,498.20 and 86,643.60

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Solution

The fourth proportional to 297,027.60, 445,498.20 and 86,643.60 is: 129,952.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,027.60 : 445,498.20 = 86,643.60 : x
  2. Step 2: Convert to fraction form
    297,027.60/445,498.20 = 86,643.60/x
  3. Step 3: Cross multiply
    297,027.60x = 445,498.20 × 86,643.60
  4. Step 4: Simplify right side
    297,027.60x = 38,599,567,841.52
  5. Step 5: Solve for x
    x = 38,599,567,841.52/297,027.60
  6. Step 6: Final answer
    x = 129,952.80

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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.