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Finding the Fourth Proportional to 309,924.97, 465,066.95 and 129,994.40

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Solution

The fourth proportional to 309,924.97, 465,066.95 and 129,994.40 is: 195,066.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,924.97 : 465,066.95 = 129,994.40 : x
  2. Step 2: Convert to fraction form
    309,924.97/465,066.95 = 129,994.40/x
  3. Step 3: Cross multiply
    309,924.97x = 465,066.95 × 129,994.40
  4. Step 4: Simplify right side
    309,924.97x = 60,456,099,637.78
  5. Step 5: Solve for x
    x = 60,456,099,637.78/309,924.97
  6. Step 6: Final answer
    x = 195,066.89

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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.