Home / 429,465.32-643,216.56-204,983.32

Finding the Fourth Proportional to 429,465.32, 643,216.56 and 204,983.32

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Solution

The fourth proportional to 429,465.32, 643,216.56 and 204,983.32 is: 307,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,465.32 : 643,216.56 = 204,983.32 : x
  2. Step 2: Convert to fraction form
    429,465.32/643,216.56 = 204,983.32/x
  3. Step 3: Cross multiply
    429,465.32x = 643,216.56 × 204,983.32
  4. Step 4: Simplify right side
    429,465.32x = 131,848,664,118.84
  5. Step 5: Solve for x
    x = 131,848,664,118.84/429,465.32
  6. Step 6: Final answer
    x = 307,006.55

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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.