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Finding the Fourth Proportional to 647,095.60, 970,672.20 and 220,625.20

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Solution

The fourth proportional to 647,095.60, 970,672.20 and 220,625.20 is: 330,947.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,095.60 : 970,672.20 = 220,625.20 : x
  2. Step 2: Convert to fraction form
    647,095.60/970,672.20 = 220,625.20/x
  3. Step 3: Cross multiply
    647,095.60x = 970,672.20 × 220,625.20
  4. Step 4: Simplify right side
    647,095.60x = 214,154,748,259.44
  5. Step 5: Solve for x
    x = 214,154,748,259.44/647,095.60
  6. Step 6: Final answer
    x = 330,947.62

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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.