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Finding the Fourth Proportional to 310,561.60, 465,885.60 and 133,067.20

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Solution

The fourth proportional to 310,561.60, 465,885.60 and 133,067.20 is: 199,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,561.60 : 465,885.60 = 133,067.20 : x
  2. Step 2: Convert to fraction form
    310,561.60/465,885.60 = 133,067.20/x
  3. Step 3: Cross multiply
    310,561.60x = 465,885.60 × 133,067.20
  4. Step 4: Simplify right side
    310,561.60x = 61,994,092,312.32
  5. Step 5: Solve for x
    x = 61,994,092,312.32/310,561.60
  6. Step 6: Final answer
    x = 199,619.31

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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.