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Finding the Fourth Proportional to 404,620.80, 606,931.20 and 194,150.40

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Solution

The fourth proportional to 404,620.80, 606,931.20 and 194,150.40 is: 291,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,620.80 : 606,931.20 = 194,150.40 : x
  2. Step 2: Convert to fraction form
    404,620.80/606,931.20 = 194,150.40/x
  3. Step 3: Cross multiply
    404,620.80x = 606,931.20 × 194,150.40
  4. Step 4: Simplify right side
    404,620.80x = 117,835,935,252.48
  5. Step 5: Solve for x
    x = 117,835,935,252.48/404,620.80
  6. Step 6: Final answer
    x = 291,225.60

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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.