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Finding the Fourth Proportional to 328,005.10, 492,005.65 and 84,846.16

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Solution

The fourth proportional to 328,005.10, 492,005.65 and 84,846.16 is: 127,268.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,005.10 : 492,005.65 = 84,846.16 : x
  2. Step 2: Convert to fraction form
    328,005.10/492,005.65 = 84,846.16/x
  3. Step 3: Cross multiply
    328,005.10x = 492,005.65 × 84,846.16
  4. Step 4: Simplify right side
    328,005.10x = 41,744,790,100.80
  5. Step 5: Solve for x
    x = 41,744,790,100.80/328,005.10
  6. Step 6: Final answer
    x = 127,268.72

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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.