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Finding the Fourth Proportional to 283,515.20, 425,272.80 and 115,116.20

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Solution

The fourth proportional to 283,515.20, 425,272.80 and 115,116.20 is: 172,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,515.20 : 425,272.80 = 115,116.20 : x
  2. Step 2: Convert to fraction form
    283,515.20/425,272.80 = 115,116.20/x
  3. Step 3: Cross multiply
    283,515.20x = 425,272.80 × 115,116.20
  4. Step 4: Simplify right side
    283,515.20x = 48,955,788,699.36
  5. Step 5: Solve for x
    x = 48,955,788,699.36/283,515.20
  6. Step 6: Final answer
    x = 172,674.30

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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.