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Finding the Fourth Proportional to 328,237.60, 492,064.80 and 194,976.40

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Solution

The fourth proportional to 328,237.60, 492,064.80 and 194,976.40 is: 292,291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,237.60 : 492,064.80 = 194,976.40 : x
  2. Step 2: Convert to fraction form
    328,237.60/492,064.80 = 194,976.40/x
  3. Step 3: Cross multiply
    328,237.60x = 492,064.80 × 194,976.40
  4. Step 4: Simplify right side
    328,237.60x = 95,941,023,270.72
  5. Step 5: Solve for x
    x = 95,941,023,270.72/328,237.60
  6. Step 6: Final answer
    x = 292,291.39

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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.