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Finding the Fourth Proportional to 485,511.68, 728,266.24 and 130,525.68

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Solution

The fourth proportional to 485,511.68, 728,266.24 and 130,525.68 is: 195,788.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,511.68 : 728,266.24 = 130,525.68 : x
  2. Step 2: Convert to fraction form
    485,511.68/728,266.24 = 130,525.68/x
  3. Step 3: Cross multiply
    485,511.68x = 728,266.24 × 130,525.68
  4. Step 4: Simplify right side
    485,511.68x = 95,057,446,197.04
  5. Step 5: Solve for x
    x = 95,057,446,197.04/485,511.68
  6. Step 6: Final answer
    x = 195,788.18

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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.