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Finding the Fourth Proportional to 328,548.76, 492,823.14 and 128,963.14

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Solution

The fourth proportional to 328,548.76, 492,823.14 and 128,963.14 is: 193,444.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,548.76 : 492,823.14 = 128,963.14 : x
  2. Step 2: Convert to fraction form
    328,548.76/492,823.14 = 128,963.14/x
  3. Step 3: Cross multiply
    328,548.76x = 492,823.14 × 128,963.14
  4. Step 4: Simplify right side
    328,548.76x = 63,556,017,883.39
  5. Step 5: Solve for x
    x = 63,556,017,883.39/328,548.76
  6. Step 6: Final answer
    x = 193,444.71

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Similar ratio
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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.