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Finding the Fourth Proportional to 321,364.16, 443,509.08 and 178,169.12

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Solution

The fourth proportional to 321,364.16, 443,509.08 and 178,169.12 is: 245,888.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,364.16 : 443,509.08 = 178,169.12 : x
  2. Step 2: Convert to fraction form
    321,364.16/443,509.08 = 178,169.12/x
  3. Step 3: Cross multiply
    321,364.16x = 443,509.08 × 178,169.12
  4. Step 4: Simplify right side
    321,364.16x = 79,019,622,495.61
  5. Step 5: Solve for x
    x = 79,019,622,495.61/321,364.16
  6. Step 6: Final answer
    x = 245,888.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.