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Finding the Fourth Proportional to 448,904.45, 672,492.81 and 280,490.87

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Solution

The fourth proportional to 448,904.45, 672,492.81 and 280,490.87 is: 420,196.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,904.45 : 672,492.81 = 280,490.87 : x
  2. Step 2: Convert to fraction form
    448,904.45/672,492.81 = 280,490.87/x
  3. Step 3: Cross multiply
    448,904.45x = 672,492.81 × 280,490.87
  4. Step 4: Simplify right side
    448,904.45x = 188,628,093,345.65
  5. Step 5: Solve for x
    x = 188,628,093,345.65/448,904.45
  6. Step 6: Final answer
    x = 420,196.53

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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.