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Finding the Fourth Proportional to 328,032.71, 492,090.74 and 128,327.48

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Solution

The fourth proportional to 328,032.71, 492,090.74 and 128,327.48 is: 192,507.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,032.71 : 492,090.74 = 128,327.48 : x
  2. Step 2: Convert to fraction form
    328,032.71/492,090.74 = 128,327.48/x
  3. Step 3: Cross multiply
    328,032.71x = 492,090.74 × 128,327.48
  4. Step 4: Simplify right side
    328,032.71x = 63,148,761,493.44
  5. Step 5: Solve for x
    x = 63,148,761,493.44/328,032.71
  6. Step 6: Final answer
    x = 192,507.52

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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.