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Finding the Fourth Proportional to 321,567.10, 482,005.05 and 121,810.30

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Solution

The fourth proportional to 321,567.10, 482,005.05 and 121,810.30 is: 182,584.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,567.10 : 482,005.05 = 121,810.30 : x
  2. Step 2: Convert to fraction form
    321,567.10/482,005.05 = 121,810.30/x
  3. Step 3: Cross multiply
    321,567.10x = 482,005.05 × 121,810.30
  4. Step 4: Simplify right side
    321,567.10x = 58,713,179,742.02
  5. Step 5: Solve for x
    x = 58,713,179,742.02/321,567.10
  6. Step 6: Final answer
    x = 182,584.54

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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.