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Finding the Fourth Proportional to 404,627.20, 606,940.80 and 141,971.20

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Solution

The fourth proportional to 404,627.20, 606,940.80 and 141,971.20 is: 212,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,627.20 : 606,940.80 = 141,971.20 : x
  2. Step 2: Convert to fraction form
    404,627.20/606,940.80 = 141,971.20/x
  3. Step 3: Cross multiply
    404,627.20x = 606,940.80 × 141,971.20
  4. Step 4: Simplify right side
    404,627.20x = 86,168,113,704.96
  5. Step 5: Solve for x
    x = 86,168,113,704.96/404,627.20
  6. Step 6: Final answer
    x = 212,956.80

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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.