Home / 330,544.40-455,914.95-303,406.62

Finding the Fourth Proportional to 330,544.40, 455,914.95 and 303,406.62

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Solution

The fourth proportional to 330,544.40, 455,914.95 and 303,406.62 is: 418,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,544.40 : 455,914.95 = 303,406.62 : x
  2. Step 2: Convert to fraction form
    330,544.40/455,914.95 = 303,406.62/x
  3. Step 3: Cross multiply
    330,544.40x = 455,914.95 × 303,406.62
  4. Step 4: Simplify right side
    330,544.40x = 138,327,616,905.17
  5. Step 5: Solve for x
    x = 138,327,616,905.17/330,544.40
  6. Step 6: Final answer
    x = 418,484.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.