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Finding the Fourth Proportional to 321,353.08, 479,156.53 and 312,525.16

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Solution

The fourth proportional to 321,353.08, 479,156.53 and 312,525.16 is: 465,993.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,353.08 : 479,156.53 = 312,525.16 : x
  2. Step 2: Convert to fraction form
    321,353.08/479,156.53 = 312,525.16/x
  3. Step 3: Cross multiply
    321,353.08x = 479,156.53 × 312,525.16
  4. Step 4: Simplify right side
    321,353.08x = 149,748,471,203.30
  5. Step 5: Solve for x
    x = 149,748,471,203.30/321,353.08
  6. Step 6: Final answer
    x = 465,993.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.