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Finding the Fourth Proportional to 283,283.20, 424,924.80 and 86,265.60

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Solution

The fourth proportional to 283,283.20, 424,924.80 and 86,265.60 is: 129,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,283.20 : 424,924.80 = 86,265.60 : x
  2. Step 2: Convert to fraction form
    283,283.20/424,924.80 = 86,265.60/x
  3. Step 3: Cross multiply
    283,283.20x = 424,924.80 × 86,265.60
  4. Step 4: Simplify right side
    283,283.20x = 36,656,392,826.88
  5. Step 5: Solve for x
    x = 36,656,392,826.88/283,283.20
  6. Step 6: Final answer
    x = 129,398.40

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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.