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Finding the Fourth Proportional to 324,431.63, 486,693.53 and 99,810.77

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Solution

The fourth proportional to 324,431.63, 486,693.53 and 99,810.77 is: 149,730.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,431.63 : 486,693.53 = 99,810.77 : x
  2. Step 2: Convert to fraction form
    324,431.63/486,693.53 = 99,810.77/x
  3. Step 3: Cross multiply
    324,431.63x = 486,693.53 × 99,810.77
  4. Step 4: Simplify right side
    324,431.63x = 48,577,253,425.09
  5. Step 5: Solve for x
    x = 48,577,253,425.09/324,431.63
  6. Step 6: Final answer
    x = 149,730.33

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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.